diff --git a/.github/workflows/run-test.yml b/.github/workflows/run-test.yml
index f99e55af..33f6f31f 100644
--- a/.github/workflows/run-test.yml
+++ b/.github/workflows/run-test.yml
@@ -25,7 +25,7 @@ jobs:
                   key: ${{ runner.os }}-${{ hashFiles('**/composer.lock') }}
             - uses: shivammathur/setup-php@v2
               with:
-                  php-version: '8.2'
+                  php-version: '8.3'
                   extensions: apcu
             - name: Configure recaptcha secrets
               run: cp config/recaptcha_secrets.json.dist config/recaptcha_secrets.json
diff --git a/.lando.yml b/.lando.yml
index a1cf7fbc..66356aed 100644
--- a/.lando.yml
+++ b/.lando.yml
@@ -5,7 +5,7 @@ excludes:
     - var/cache
     - node_modules
 config:
-    php: '8.2'
+    php: '8.3'
     config:
         php: lando/php/php.ini
         vhosts: lando/apache/000-default.conf
@@ -21,7 +21,7 @@ services:
             - 'apt-get update'
             - '/bin/bash /app/shell_provisioner/run.sh'
         overrides:
-            image: 'devwithlando/php:8.2-apache-4'
+            image: 'devwithlando/php:8.3-apache-4'
             build:
                 context: ./lando
                 dockerfile: Dockerfile
diff --git a/composer.json b/composer.json
index 88e91c32..7b95c66f 100644
--- a/composer.json
+++ b/composer.json
@@ -4,7 +4,7 @@
     "type": "project",
     "license": "proprietary",
     "require": {
-        "php": "^8.2",
+        "php": "^8.3",
         "ext-apcu": "*",
         "ext-ctype": "*",
         "ext-iconv": "*",
diff --git a/composer.lock b/composer.lock
index ff9c4e4e..ac51e478 100644
--- a/composer.lock
+++ b/composer.lock
@@ -12405,7 +12405,7 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": "^8.2",
+        "php": "^8.3",
         "ext-apcu": "*",
         "ext-ctype": "*",
         "ext-iconv": "*"
diff --git a/config/packages/framework.yaml b/config/packages/framework.yaml
index da4518f4..5355e05c 100644
--- a/config/packages/framework.yaml
+++ b/config/packages/framework.yaml
@@ -3,6 +3,7 @@ framework:
     secret: '%env(APP_SECRET)%'
     csrf_protection: true
     http_method_override: true
+    handle_all_throwables: true
 
     translator: { fallback: "%locale%" }
     default_locale:  "%locale%"
diff --git a/deploy.sh b/deploy.sh
index d7c84501..4d898b57 100644
--- a/deploy.sh
+++ b/deploy.sh
@@ -67,7 +67,7 @@ chmod -R a+rwX var/log var/cache
 printOk
 
 printAction "Stopping FPM"
-sudo systemctl stop php8.2-fpm
+sudo systemctl stop php8.3-fpm
 printOk
 #printAction "Running doctrine schema update"
 #bin/console doctrine:schema:update --force ${Q}
@@ -77,7 +77,7 @@ printAction "Activate new version"
 ln -sfn releases/${VERSION} current
 printOk
 printAction "Starting FPM"
-sudo systemctl start php8.2-fpm
+sudo systemctl start php8.3-fpm
 printOk
 
 printAction "Cleanup old versions, keep last 2"
diff --git a/lando/Dockerfile b/lando/Dockerfile
index e581c551..ce365109 100644
--- a/lando/Dockerfile
+++ b/lando/Dockerfile
@@ -1,4 +1,4 @@
-FROM devwithlando/php:8.2-apache-4
+FROM devwithlando/php:8.3-apache-4
 
 RUN apt-get update -y
 
diff --git a/src/Command/EnrichParticipantInfoCommand.php b/src/Command/EnrichParticipantInfoCommand.php
index 003dc746..55089cd4 100644
--- a/src/Command/EnrichParticipantInfoCommand.php
+++ b/src/Command/EnrichParticipantInfoCommand.php
@@ -6,35 +6,31 @@
 use Doctrine\ORM\EntityManagerInterface;
 use GeoIp2\Database\Reader;
 use GeoIp2\Exception\AddressNotFoundException;
+use MaxMind\Db\Reader\InvalidDatabaseException;
 use Symfony\Component\Console\Command\Command;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Output\OutputInterface;
 
 class EnrichParticipantInfoCommand extends Command
 {
-    private ParticipantRepository $participantRepository;
-    private EntityManagerInterface $em;
-    private string $geoIpDbPath;
-
     public function __construct(
-        ParticipantRepository $participantRepository,
-        EntityManagerInterface $em,
-        string $geoIpDbPath,
+        private ParticipantRepository $participantRepository,
+        private EntityManagerInterface $em,
+        private string $geoIpDbPath,
     ) {
-        $this->participantRepository = $participantRepository;
-        $this->em = $em;
-        $this->geoIpDbPath = $geoIpDbPath;
-
         parent::__construct();
     }
 
-    protected function configure()
+    protected function configure(): void
     {
         $this
             ->setName('app:enrich:participants')
             ->setDescription('Enrich the participant information');
     }
 
+    /**
+     * @throws InvalidDatabaseException
+     */
     protected function execute(InputInterface $input, OutputInterface $output): int
     {
         $batchSize = 1000;
diff --git a/src/Command/GetBouncedMailsCommand.php b/src/Command/GetBouncedMailsCommand.php
index 5e17ee7b..32f85848 100644
--- a/src/Command/GetBouncedMailsCommand.php
+++ b/src/Command/GetBouncedMailsCommand.php
@@ -9,22 +9,21 @@
 
 class GetBouncedMailsCommand extends Command
 {
-    private BounceQuery $bounceQuery;
-
-    public function __construct(BounceQuery $bounceQuery)
+    public function __construct(private readonly BounceQuery $bounceQuery)
     {
-        $this->bounceQuery = $bounceQuery;
-
         parent::__construct();
     }
 
-    protected function configure()
+    protected function configure(): void
     {
         $this
             ->setName('app:getBounced')
             ->setDescription('Get bounced emails');
     }
 
+    /**
+     * @throws \Exception
+     */
     protected function execute(InputInterface $input, OutputInterface $output): int
     {
         $bounces = $this->bounceQuery->getBounces();
diff --git a/src/Command/HashBlacklistCommand.php b/src/Command/HashBlacklistCommand.php
index bb9cc1ce..9e06589e 100644
--- a/src/Command/HashBlacklistCommand.php
+++ b/src/Command/HashBlacklistCommand.php
@@ -11,20 +11,14 @@
 
 class HashBlacklistCommand extends Command
 {
-    private EntityManagerInterface $em;
-    private HashService $hashService;
-
     public function __construct(
-        EntityManagerInterface $em,
-        HashService $hashService,
+        private readonly EntityManagerInterface $em,
+        private readonly HashService $hashService,
     ) {
-        $this->em = $em;
-        $this->hashService = $hashService;
-
         parent::__construct();
     }
 
-    protected function configure()
+    protected function configure(): void
     {
         $this
             ->setName('app:hash-black-list')
diff --git a/src/Command/HashOldDataCommand.php b/src/Command/HashOldDataCommand.php
index ae020973..4c3fb095 100644
--- a/src/Command/HashOldDataCommand.php
+++ b/src/Command/HashOldDataCommand.php
@@ -5,6 +5,7 @@
 use App\Entity\BlacklistEmail;
 use App\Entity\Participant;
 use App\Service\HashService;
+use Doctrine\DBAL\Logging\Middleware as LoggingMiddleware;
 use Doctrine\ORM\EntityManagerInterface;
 use Symfony\Component\Console\Command\Command;
 use Symfony\Component\Console\Input\InputInterface;
@@ -13,14 +14,17 @@
 class HashOldDataCommand extends Command
 {
     public function __construct(
-        private EntityManagerInterface $em,
-        private HashService $hashService,
+        private readonly EntityManagerInterface $em,
+        private readonly HashService $hashService,
     ) {
-        $em
-            ->getConnection()
-            ->getConfiguration()
-            ->setSQLLogger(null)
-        ;
+        $configuration = $em->getConnection()->getConfiguration();
+        $middlewares = $configuration->getMiddlewares();
+
+        $filteredMiddlewares = array_filter($middlewares, static function ($middleware) {
+            return !($middleware instanceof LoggingMiddleware);
+        });
+
+        $configuration->setMiddlewares($filteredMiddlewares);
 
         parent::__construct();
     }
diff --git a/src/Command/ReportQueriesCommand.php b/src/Command/ReportQueriesCommand.php
index 39713daa..941925e1 100644
--- a/src/Command/ReportQueriesCommand.php
+++ b/src/Command/ReportQueriesCommand.php
@@ -11,17 +11,12 @@
 
 class ReportQueriesCommand extends Command
 {
-    private ReportQueriesService $reportQueriesService;
-    private ExportReportQueriesService $exportReportQueriesService;
-
-    public function __construct(ReportQueriesService $reportQueriesService, ExportReportQueriesService $exportReportQueriesService)
+    public function __construct(private readonly ReportQueriesService $reportQueriesService, private readonly ExportReportQueriesService $exportReportQueriesService)
     {
         parent::__construct();
-        $this->reportQueriesService = $reportQueriesService;
-        $this->exportReportQueriesService = $exportReportQueriesService;
     }
 
-    protected function configure()
+    protected function configure(): void
     {
         $this
             ->setName('app:report-queries')
@@ -37,10 +32,8 @@ protected function execute(InputInterface $input, OutputInterface $output): int
     {
         $year = $input->getArgument('year');
 
-        if ('all' !== $year) {
-            if (false === strtotime($year)) {
-                $year = date('Y');
-            }
+        if (('all' !== $year) && false === strtotime($year)) {
+            $year = date('Y');
         }
 
         $this->exportReportQueriesService->export($this->reportQueriesService->getReportResults($year), $year);
diff --git a/src/Command/SendEmptyWishlistReminderCommand.php b/src/Command/SendEmptyWishlistReminderCommand.php
index 47fcb6c3..70524a6f 100644
--- a/src/Command/SendEmptyWishlistReminderCommand.php
+++ b/src/Command/SendEmptyWishlistReminderCommand.php
@@ -12,26 +12,16 @@
 
 class SendEmptyWishlistReminderCommand extends Command
 {
-    private EntityManagerInterface $em;
-    private ParticipantMailQuery $participantMailQuery;
-    private WishlistMailQuery $wishlistMailQuery;
-    private MailerService $mailerService;
-
     public function __construct(
-        EntityManagerInterface $em,
-        ParticipantMailQuery $participantMailQuery,
-        WishlistMailQuery $wishlistMailQuery,
-        MailerService $mailerService,
+        private readonly EntityManagerInterface $em,
+        private readonly ParticipantMailQuery $participantMailQuery,
+        private readonly WishlistMailQuery $wishlistMailQuery,
+        private readonly MailerService $mailerService,
     ) {
-        $this->em = $em;
-        $this->participantMailQuery = $participantMailQuery;
-        $this->wishlistMailQuery = $wishlistMailQuery;
-        $this->mailerService = $mailerService;
-
         parent::__construct();
     }
 
-    protected function configure()
+    protected function configure(): void
     {
         $this
             ->setName('app:sendWishlistReminderMails')
diff --git a/src/Command/SendParticipantViewReminderCommand.php b/src/Command/SendParticipantViewReminderCommand.php
index 07fb38a2..8aa89d10 100644
--- a/src/Command/SendParticipantViewReminderCommand.php
+++ b/src/Command/SendParticipantViewReminderCommand.php
@@ -11,23 +11,15 @@
 
 class SendParticipantViewReminderCommand extends Command
 {
-    private EntityManagerInterface $em;
-    private ParticipantMailQuery $participantMailQuery;
-    private MailerService $mailerService;
-
     public function __construct(
-        EntityManagerInterface $em,
-        ParticipantMailQuery $participantMailQuery,
-        MailerService $mailerService,
+        private readonly EntityManagerInterface $em,
+        private readonly ParticipantMailQuery $participantMailQuery,
+        private readonly MailerService $mailerService,
     ) {
-        $this->em = $em;
-        $this->participantMailQuery = $participantMailQuery;
-        $this->mailerService = $mailerService;
-
         parent::__construct();
     }
 
-    protected function configure()
+    protected function configure(): void
     {
         $this
             ->setName('app:sendParticipantViewReminderMails')
diff --git a/src/Command/SendPartyStatusCommand.php b/src/Command/SendPartyStatusCommand.php
index 647e9df5..4b1a2212 100644
--- a/src/Command/SendPartyStatusCommand.php
+++ b/src/Command/SendPartyStatusCommand.php
@@ -12,23 +12,15 @@
 
 class SendPartyStatusCommand extends Command
 {
-    private EntityManagerInterface $em;
-    private ParticipantMailQuery $participantMailQuery;
-    private MailerService $mailerService;
-
     public function __construct(
-        EntityManagerInterface $em,
-        ParticipantMailQuery $participantMailQuery,
-        MailerService $mailerService,
+        private readonly EntityManagerInterface $em,
+        private readonly ParticipantMailQuery $participantMailQuery,
+        private readonly MailerService $mailerService,
     ) {
-        $this->em = $em;
-        $this->participantMailQuery = $participantMailQuery;
-        $this->mailerService = $mailerService;
-
         parent::__construct();
     }
 
-    protected function configure()
+    protected function configure(): void
     {
         $this
             ->setName('app:sendPartyStatusMails')
diff --git a/src/Command/SendWishlistUpdatedCommand.php b/src/Command/SendWishlistUpdatedCommand.php
index e84a6e0c..c51a7d5d 100644
--- a/src/Command/SendWishlistUpdatedCommand.php
+++ b/src/Command/SendWishlistUpdatedCommand.php
@@ -12,23 +12,15 @@
 
 class SendWishlistUpdatedCommand extends Command
 {
-    private EntityManagerInterface $em;
-    private ParticipantMailQuery $participantMailQuery;
-    private MailerService $mailerService;
-
     public function __construct(
-        EntityManagerInterface $em,
-        ParticipantMailQuery $participantMailQuery,
-        MailerService $mailerService,
+        private readonly EntityManagerInterface $em,
+        private readonly ParticipantMailQuery $participantMailQuery,
+        private readonly MailerService $mailerService,
     ) {
-        $this->em = $em;
-        $this->participantMailQuery = $participantMailQuery;
-        $this->mailerService = $mailerService;
-
         parent::__construct();
     }
 
-    protected function configure()
+    protected function configure(): void
     {
         $this
             ->setName('app:sendWishlistUpdatedMails')
diff --git a/src/DependencyInjection/Compiler/FormCompilerPass.php b/src/DependencyInjection/Compiler/FormCompilerPass.php
index de148a62..725f154e 100644
--- a/src/DependencyInjection/Compiler/FormCompilerPass.php
+++ b/src/DependencyInjection/Compiler/FormCompilerPass.php
@@ -12,12 +12,9 @@
  */
 class FormCompilerPass implements CompilerPassInterface
 {
-    /**
-     * @var array
-     */
-    private $templates = ['jquery'];
+    private array $templates = ['jquery'];
 
-    public function process(ContainerBuilder $container)
+    public function process(ContainerBuilder $container): void
     {
         $resources = $container->getParameter('twig.form.resources');
 
diff --git a/src/Form/Extension/DateTypeExtension.php b/src/Form/Extension/DateTypeExtension.php
index cdbe6282..b0638f71 100644
--- a/src/Form/Extension/DateTypeExtension.php
+++ b/src/Form/Extension/DateTypeExtension.php
@@ -10,7 +10,7 @@
 
 class DateTypeExtension extends AbstractTypeExtension
 {
-    public function configureOptions(OptionsResolver $resolver)
+    public function configureOptions(OptionsResolver $resolver): void
     {
         $resolver->setDefaults([
             'widget' => 'single_text',
@@ -24,7 +24,7 @@ public function configureOptions(OptionsResolver $resolver)
         ]);
     }
 
-    public function buildView(FormView $view, FormInterface $form, array $options)
+    public function buildView(FormView $view, FormInterface $form, array $options): void
     {
         // Adds a custom block prefix
         array_splice(
@@ -35,7 +35,7 @@ public function buildView(FormView $view, FormInterface $form, array $options)
         );
     }
 
-    public function finishView(FormView $view, FormInterface $form, array $options)
+    public function finishView(FormView $view, FormInterface $form, array $options): void
     {
         $view->vars['type'] = 'text';
 
@@ -47,7 +47,7 @@ public function finishView(FormView $view, FormInterface $form, array $options)
         ]);
     }
 
-    public function getExtendedType()
+    public function getExtendedType(): string
     {
         return DateType::class;
     }
diff --git a/src/Form/Type/AddParticipantType.php b/src/Form/Type/AddParticipantType.php
index e53699dd..47c3a7e8 100644
--- a/src/Form/Type/AddParticipantType.php
+++ b/src/Form/Type/AddParticipantType.php
@@ -10,7 +10,7 @@
 
 class AddParticipantType extends AbstractType
 {
-    public function buildForm(FormBuilderInterface $builder, array $options)
+    public function buildForm(FormBuilderInterface $builder, array $options): void
     {
         $builder
             ->add(
@@ -26,7 +26,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
         ;
     }
 
-    public function configureOptions(OptionsResolver $resolver)
+    public function configureOptions(OptionsResolver $resolver): void
     {
         $resolver->setDefaults([
             'data_class' => Participant::class,
diff --git a/src/Form/Type/AnonymousMessageFormType.php b/src/Form/Type/AnonymousMessageFormType.php
index 858e5f81..c28d67af 100644
--- a/src/Form/Type/AnonymousMessageFormType.php
+++ b/src/Form/Type/AnonymousMessageFormType.php
@@ -10,7 +10,7 @@
 
 class AnonymousMessageFormType extends AbstractType
 {
-    public function buildForm(FormBuilderInterface $builder, array $options)
+    public function buildForm(FormBuilderInterface $builder, array $options): void
     {
         $builder
              ->add('message', TextareaType::class, [
diff --git a/src/Form/Type/ContactType.php b/src/Form/Type/ContactType.php
index 7eb96074..2a7d8e28 100644
--- a/src/Form/Type/ContactType.php
+++ b/src/Form/Type/ContactType.php
@@ -15,7 +15,7 @@
 
 class ContactType extends AbstractType
 {
-    public function buildForm(FormBuilderInterface $builder, array $options)
+    public function buildForm(FormBuilderInterface $builder, array $options): void
     {
         $builder
             ->add('subject', ChoiceType::class, [
@@ -46,7 +46,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
         ;
     }
 
-    public function configureOptions(OptionsResolver $resolver)
+    public function configureOptions(OptionsResolver $resolver): void
     {
         $resolver->setDefaults([
             'data_class' => ContactSubmission::class,
diff --git a/src/Form/Type/ExcludeParticipantType.php b/src/Form/Type/ExcludeParticipantType.php
index 7da59faf..6e23dff3 100644
--- a/src/Form/Type/ExcludeParticipantType.php
+++ b/src/Form/Type/ExcludeParticipantType.php
@@ -13,7 +13,7 @@
 
 class ExcludeParticipantType extends AbstractType
 {
-    public function buildForm(FormBuilderInterface $builder, array $options)
+    public function buildForm(FormBuilderInterface $builder, array $options): void
     {
         $builder->addEventListener(FormEvents::PRE_SET_DATA, function (FormEvent $event) {
             $me = $event->getData();
@@ -40,7 +40,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
         });
     }
 
-    public function configureOptions(OptionsResolver $resolver)
+    public function configureOptions(OptionsResolver $resolver): void
     {
         $resolver->setDefaults([
             'data_class' => Participant::class,
diff --git a/src/Form/Type/ForgotLinkType.php b/src/Form/Type/ForgotLinkType.php
index b552dcf4..d946fa53 100644
--- a/src/Form/Type/ForgotLinkType.php
+++ b/src/Form/Type/ForgotLinkType.php
@@ -10,7 +10,7 @@
 
 class ForgotLinkType extends AbstractType
 {
-    public function buildForm(FormBuilderInterface $builder, array $options)
+    public function buildForm(FormBuilderInterface $builder, array $options): void
     {
         $builder
             ->add('email', EmailType::class, [
diff --git a/src/Form/Type/ParticipantType.php b/src/Form/Type/ParticipantType.php
index c56758a3..c89085cb 100644
--- a/src/Form/Type/ParticipantType.php
+++ b/src/Form/Type/ParticipantType.php
@@ -10,7 +10,7 @@
 
 class ParticipantType extends AbstractType
 {
-    public function buildForm(FormBuilderInterface $builder, array $options)
+    public function buildForm(FormBuilderInterface $builder, array $options): void
     {
         $builder
             ->add(
@@ -26,7 +26,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
         ;
     }
 
-    public function configureOptions(OptionsResolver $resolver)
+    public function configureOptions(OptionsResolver $resolver): void
     {
         $resolver->setDefaults([
             'data_class' => Participant::class,
diff --git a/src/Form/Type/PartyExcludeParticipantType.php b/src/Form/Type/PartyExcludeParticipantType.php
index d4469c45..6f315823 100644
--- a/src/Form/Type/PartyExcludeParticipantType.php
+++ b/src/Form/Type/PartyExcludeParticipantType.php
@@ -11,7 +11,7 @@
 
 class PartyExcludeParticipantType extends AbstractType
 {
-    public function buildForm(FormBuilderInterface $builder, array $options)
+    public function buildForm(FormBuilderInterface $builder, array $options): void
     {
         $builder
             ->add(
@@ -24,7 +24,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
             );
     }
 
-    public function configureOptions(OptionsResolver $resolver)
+    public function configureOptions(OptionsResolver $resolver): void
     {
         $resolver->setDefaults(
             [
diff --git a/src/Form/Type/PartyType.php b/src/Form/Type/PartyType.php
index 13a354b0..e6cffac2 100644
--- a/src/Form/Type/PartyType.php
+++ b/src/Form/Type/PartyType.php
@@ -14,7 +14,7 @@
 
 class PartyType extends AbstractType
 {
-    public function buildForm(FormBuilderInterface $builder, array $options)
+    public function buildForm(FormBuilderInterface $builder, array $options): void
     {
         $builder
             ->add('message', TextareaType::class)
@@ -39,7 +39,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
         ;
     }
 
-    public function configureOptions(OptionsResolver $resolver)
+    public function configureOptions(OptionsResolver $resolver): void
     {
         $resolver->setDefaults([
             'data_class' => Party::class,
diff --git a/src/Form/Type/RequestReuseUrlType.php b/src/Form/Type/RequestReuseUrlType.php
index b65566d9..8fd95bef 100644
--- a/src/Form/Type/RequestReuseUrlType.php
+++ b/src/Form/Type/RequestReuseUrlType.php
@@ -10,7 +10,7 @@
 
 class RequestReuseUrlType extends AbstractType
 {
-    public function buildForm(FormBuilderInterface $builder, array $options)
+    public function buildForm(FormBuilderInterface $builder, array $options): void
     {
         $builder
             ->add('email', EmailType::class, [
diff --git a/src/Form/Type/SetJoinModeType.php b/src/Form/Type/SetJoinModeType.php
index def6136d..59bdc4bd 100644
--- a/src/Form/Type/SetJoinModeType.php
+++ b/src/Form/Type/SetJoinModeType.php
@@ -10,7 +10,7 @@
 
 class SetJoinModeType extends AbstractType
 {
-    public function buildForm(FormBuilderInterface $builder, array $options)
+    public function buildForm(FormBuilderInterface $builder, array $options): void
     {
         $builder
             ->add(
@@ -26,7 +26,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
         ;
     }
 
-    public function configureOptions(OptionsResolver $resolver)
+    public function configureOptions(OptionsResolver $resolver): void
     {
         $resolver->setDefaults([
             'data_class' => Party::class,
diff --git a/src/Form/Type/UnsubscribeType.php b/src/Form/Type/UnsubscribeType.php
index 8ddb3c48..ba6c21ca 100644
--- a/src/Form/Type/UnsubscribeType.php
+++ b/src/Form/Type/UnsubscribeType.php
@@ -8,7 +8,7 @@
 
 class UnsubscribeType extends AbstractType
 {
-    public function buildForm(FormBuilderInterface $builder, array $options)
+    public function buildForm(FormBuilderInterface $builder, array $options): void
     {
         $builder
             ->add('allParties', CheckboxType::class, [
diff --git a/src/Form/Type/UpdatePartyDetailsType.php b/src/Form/Type/UpdatePartyDetailsType.php
index e6d6271a..fecd07e4 100644
--- a/src/Form/Type/UpdatePartyDetailsType.php
+++ b/src/Form/Type/UpdatePartyDetailsType.php
@@ -12,7 +12,7 @@
 
 class UpdatePartyDetailsType extends AbstractType
 {
-    public function buildForm(FormBuilderInterface $builder, array $options)
+    public function buildForm(FormBuilderInterface $builder, array $options): void
     {
         $builder
             ->add('eventdate', DateType::class, [
@@ -30,7 +30,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
         }
     }
 
-    public function configureOptions(OptionsResolver $resolver)
+    public function configureOptions(OptionsResolver $resolver): void
     {
         $resolver->setDefaults([
             'data_class' => Party::class,
diff --git a/src/Form/Type/WishlistItemType.php b/src/Form/Type/WishlistItemType.php
index 2a078b1c..d9bdc0ef 100644
--- a/src/Form/Type/WishlistItemType.php
+++ b/src/Form/Type/WishlistItemType.php
@@ -11,14 +11,14 @@
 
 class WishlistItemType extends AbstractType
 {
-    public function buildForm(FormBuilderInterface $builder, array $options)
+    public function buildForm(FormBuilderInterface $builder, array $options): void
     {
         $builder
             ->add('rank', HiddenType::class)
             ->add('description', TextType::class);
     }
 
-    public function configureOptions(OptionsResolver $resolver)
+    public function configureOptions(OptionsResolver $resolver): void
     {
         $resolver->setDefaults(
             [
diff --git a/src/Form/Type/WishlistType.php b/src/Form/Type/WishlistType.php
index ead56e27..4533c60a 100644
--- a/src/Form/Type/WishlistType.php
+++ b/src/Form/Type/WishlistType.php
@@ -10,7 +10,7 @@
 
 class WishlistType extends AbstractType
 {
-    public function buildForm(FormBuilderInterface $builder, array $options)
+    public function buildForm(FormBuilderInterface $builder, array $options): void
     {
         $builder->add('wishlistItems', CollectionType::class,
             [
@@ -20,7 +20,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
             ]);
     }
 
-    public function configureOptions(OptionsResolver $resolver)
+    public function configureOptions(OptionsResolver $resolver): void
     {
         $resolver->setDefaults(
             [
diff --git a/src/Query/ParticipantReportQuery.php b/src/Query/ParticipantReportQuery.php
index 4aa8411e..6f41b3f1 100644
--- a/src/Query/ParticipantReportQuery.php
+++ b/src/Query/ParticipantReportQuery.php
@@ -4,17 +4,21 @@
 
 use Doctrine\Common\Collections\Criteria;
 use Doctrine\DBAL\Connection;
+use Doctrine\DBAL\Exception;
 use Doctrine\DBAL\Query\QueryBuilder;
 
 class ParticipantReportQuery
 {
     public function __construct(
-        private Connection $dbal,
-        private PartyReportQuery $partyReportQuery,
-        private FeaturedYearsQuery $featuredYearsQuery,
+        private readonly Connection $dbal,
+        private readonly PartyReportQuery $partyReportQuery,
+        private readonly FeaturedYearsQuery $featuredYearsQuery,
     ) {
     }
 
+    /**
+     * @throws Exception
+     */
     public function countConfirmedParticipantsUntilDate(\DateTime $date): array
     {
         $query = $this->dbal->createQueryBuilder()
@@ -25,9 +29,12 @@ public function countConfirmedParticipantsUntilDate(\DateTime $date): array
             ->andWhere('e.view_date IS NOT NULL')
             ->setParameter('lastDay', $date->format('Y-m-d H:i:s'));
 
-        return $query->execute()->fetchAll();
+        return $query->fetchAllAssociative();
     }
 
+    /**
+     * @throws Exception
+     */
     public function countDistinctParticipantsUntilDate(\DateTime $date): array
     {
         $query = $this->dbal->createQueryBuilder()
@@ -37,9 +44,12 @@ public function countDistinctParticipantsUntilDate(\DateTime $date): array
             ->where('p.sent_date < :lastDay')
             ->setParameter('lastDay', $date->format('Y-m-d H:i:s'));
 
-        return $query->execute()->fetchAll();
+        return $query->fetchAllAssociative();
     }
 
+    /**
+     * @throws Exception
+     */
     public function queryDataForMonthlyParticipantChart(Season $season): array
     {
         $query = $this->dbal->createQueryBuilder()
@@ -53,9 +63,12 @@ public function queryDataForMonthlyParticipantChart(Season $season): array
             ->setParameter('firstDay', $season->getStart()->format('Y-m-d H:i:s'))
             ->setParameter('lastDay', $season->getEnd()->format('Y-m-d H:i:s'));
 
-        return $query->execute()->fetchAll();
+        return $query->fetchAllAssociative();
     }
 
+    /**
+     * @throws Exception
+     */
     public function queryDataForYearlyParticipantChart(): array
     {
         $featuredYears = $this->featuredYearsQuery->getFeaturedYears();
@@ -75,7 +88,7 @@ public function queryDataForYearlyParticipantChart(): array
                 ->setParameter('firstDay', $firstDay)
                 ->setParameter('lastDay', $lastDay);
 
-            $chartData = $query->execute()->fetchAll();
+            $chartData = $query->fetchAllAssociative();
 
             $participant = [
                 'year' => $year,
@@ -88,6 +101,9 @@ public function queryDataForYearlyParticipantChart(): array
         return $participantChartData;
     }
 
+    /**
+     * @throws Exception
+     */
     public function queryDataForParticipantChartUntilDate(\DateTime $date): array
     {
         $query = $this->dbal->createQueryBuilder()
@@ -98,7 +114,7 @@ public function queryDataForParticipantChartUntilDate(\DateTime $date): array
             ->groupBy('year(p.sent_date), month(p.sent_date)')
             ->setParameter('lastDay', $date->format('Y-m-d H:i:s'));
 
-        $totalParticipantChartData = $query->execute()->fetchAll();
+        $totalParticipantChartData = $query->fetchAllAssociative();
 
         $accumulatedParticipantCounter = 0;
 
@@ -110,6 +126,9 @@ public function queryDataForParticipantChartUntilDate(\DateTime $date): array
         return $totalParticipantChartData;
     }
 
+    /**
+     * @throws Exception
+     */
     public function calculateAverageParticipantsPerPartyUntilDate(\DateTime $date): float
     {
         $totalParties = $this->partyReportQuery->countAllPartiesUntilDate($date);
@@ -122,6 +141,9 @@ public function calculateAverageParticipantsPerPartyUntilDate(\DateTime $date):
         throw new NoResultException();
     }
 
+    /**
+     * @throws Exception
+     */
     public function countAllParticipantsUntilDate(\DateTime $date): array
     {
         $query = $this->dbal->createQueryBuilder()
@@ -131,9 +153,12 @@ public function countAllParticipantsUntilDate(\DateTime $date): array
             ->where('p.sent_date < :lastDay')
             ->setParameter('lastDay', $date->format('Y-m-d H:i:s'));
 
-        return $query->execute()->fetchAll();
+        return $query->fetchAllAssociative();
     }
 
+    /**
+     * @throws Exception
+     */
     public function calculateParticipantCountDifferenceBetweenSeasons(Season $season1, Season $season2): int
     {
         $participantCountSeason1 = $this->countParticipants($season1);
@@ -147,6 +172,9 @@ public function calculateParticipantCountDifferenceBetweenSeasons(Season $season
         return $participantCountSeason1 - $participantCountSeason2;
     }
 
+    /**
+     * @throws Exception
+     */
     public function countParticipants(Season $season): int
     {
         $query = $this->dbal->createQueryBuilder()
@@ -158,11 +186,14 @@ public function countParticipants(Season $season): int
             ->setParameter('firstDay', $season->getStart()->format('Y-m-d H:i:s'))
             ->setParameter('lastDay', $season->getEnd()->format('Y-m-d H:i:s'));
 
-        $participantCount = $query->execute()->fetchAll();
+        $participantCount = $query->fetchAllAssociative();
 
         return (int) $participantCount[0]['participant_count'];
     }
 
+    /**
+     * @throws Exception
+     */
     public function calculateConfirmedParticipantsCountDifferenceBetweenSeasons(Season $season1, Season $season2): mixed
     {
         $confirmedParticipantCountSeason1 = $this->countConfirmedParticipants($season1);
@@ -176,6 +207,9 @@ public function calculateConfirmedParticipantsCountDifferenceBetweenSeasons(Seas
         return $confirmedParticipantCountSeason1[0]['confirmedParticipantCount'] - $confirmedParticipantCountSeason2[0]['confirmedParticipantCount'];
     }
 
+    /**
+     * @throws Exception
+     */
     public function countConfirmedParticipants(Season $season): array
     {
         $query = $this->dbal->createQueryBuilder()
@@ -188,9 +222,12 @@ public function countConfirmedParticipants(Season $season): array
             ->setParameter('firstDay', $season->getStart()->format('Y-m-d H:i:s'))
             ->setParameter('lastDay', $season->getEnd()->format('Y-m-d H:i:s'));
 
-        return $query->execute()->fetchAll();
+        return $query->fetchAllAssociative();
     }
 
+    /**
+     * @throws Exception
+     */
     public function calculateDistinctParticipantCountDifferenceBetweenSeasons(Season $season1, Season $season2): mixed
     {
         $distinctParticipantCountSeason1 = $this->countDistinctParticipants($season1);
@@ -204,6 +241,9 @@ public function calculateDistinctParticipantCountDifferenceBetweenSeasons(Season
         return $distinctParticipantCountSeason1[0]['distinctParticipantCount'] - $distinctParticipantCountSeason2[0]['distinctParticipantCount'];
     }
 
+    /**
+     * @throws Exception
+     */
     public function countDistinctParticipants(Season $season): array
     {
         $query = $this->dbal->createQueryBuilder()
@@ -215,7 +255,7 @@ public function countDistinctParticipants(Season $season): array
             ->setParameter('firstDay', $season->getStart()->format('Y-m-d H:i:s'))
             ->setParameter('lastDay', $season->getEnd()->format('Y-m-d H:i:s'));
 
-        return $query->execute()->fetchAll();
+        return $query->fetchAllAssociative();
     }
 
     public function calculateAverageParticipantsPerPartyBetweenSeasons(Season $season1, Season $season2): float
@@ -243,6 +283,9 @@ public function calculateAverageParticipantsPerParty(Season $season): float
         throw new NoResultException();
     }
 
+    /**
+     * @throws Exception
+     */
     public function fetchMailsForExport(Season $season, bool $isAdmin): iterable
     {
         /** @var QueryBuilder $subQuery */
@@ -279,11 +322,12 @@ public function fetchMailsForExport(Season $season, bool $isAdmin): iterable
             ->setParameter('lastDay', $season->getEnd()->format('Y-m-d H:i:s'))
             ->setParameter('admin', $isAdmin ? 1 : 0);
 
-        $result = $qb->execute()->fetchAll();
-
-        return $result;
+        return $qb->fetchAllAssociative();
     }
 
+    /**
+     * @throws Exception
+     */
     public function fetchDataForPartyUpdateMail(string $listUrl): array
     {
         $party = $this->dbal->createQueryBuilder()
@@ -315,13 +359,16 @@ public function fetchDataForPartyUpdateMail(string $listUrl): array
             ->setParameter('listurl', $listUrl);
 
         return [
-            'party' => $party->execute()->fetchAll(),
-            'participantCount' => $participantCount->execute()->fetchAll(),
-            'wishlistCount' => $wishlistCount->execute()->fetchAll(),
-            'viewedCount' => $viewedCount->execute()->fetchAll(),
+            'party' => $party->fetchAllAssociative(),
+            'participantCount' => $participantCount->fetchAllAssociative(),
+            'wishlistCount' => $wishlistCount->fetchAllAssociative(),
+            'viewedCount' => $viewedCount->fetchAllAssociative(),
         ];
     }
 
+    /**
+     * @throws Exception
+     */
     public function findBuddyByParticipantId(int $participantId): array
     {
         $query = $this->dbal->createQueryBuilder()
@@ -330,6 +377,6 @@ public function findBuddyByParticipantId(int $participantId): array
             ->where('p.assigned_participant_id = :id')
             ->setParameter('id', $participantId);
 
-        return $query->execute()->fetchAll();
+        return $query->fetchAllAssociative();
     }
 }
diff --git a/src/Query/PartyReportQuery.php b/src/Query/PartyReportQuery.php
index 78f64bfe..68f25ca7 100644
--- a/src/Query/PartyReportQuery.php
+++ b/src/Query/PartyReportQuery.php
@@ -3,6 +3,7 @@
 namespace App\Query;
 
 use Doctrine\DBAL\Connection;
+use Doctrine\DBAL\Exception;
 
 class PartyReportQuery
 {
@@ -15,6 +16,9 @@ public function __construct(Connection $dbal, FeaturedYearsQuery $featuredYearsQ
         $this->featuredYearsQuery = $featuredYearsQuery;
     }
 
+    /**
+     * @throws Exception
+     */
     public function countParties(Season $season): int
     {
         $query = $this->dbal->createQueryBuilder()
@@ -25,12 +29,15 @@ public function countParties(Season $season): int
             ->setParameter('firstDay', $season->getStart()->format('Y-m-d H:i:s'))
             ->setParameter('lastDay', $season->getEnd()->format('Y-m-d H:i:s'));
 
-        $partyCount = $query->execute()->fetchAll();
+        $partyCount = $query->fetchAllAssociative();
 
         return (int) $partyCount[0]['partyCount'];
     }
 
-    public function countAllPartiesUntilDate(\DateTime $date)
+    /**
+     * @throws Exception
+     */
+    public function countAllPartiesUntilDate(\DateTime $date): array
     {
         $query = $this->dbal->createQueryBuilder()
             ->select('count(p.id) AS partyCount')
@@ -38,10 +45,13 @@ public function countAllPartiesUntilDate(\DateTime $date)
             ->where('p.sent_date < :lastDay')
             ->setParameter('lastDay', $date->format('Y-m-d H:i:s'));
 
-        return $query->execute()->fetchAll();
+        return $query->fetchAllAssociative();
     }
 
-    public function queryDataForMonthlyPartyChart(Season $season)
+    /**
+     * @throws Exception
+     */
+    public function queryDataForMonthlyPartyChart(Season $season): array
     {
         $query = $this->dbal->createQueryBuilder()
             ->select('count(p.id) AS accumulatedPartyCountByMonth, p.sent_date AS month')
@@ -53,9 +63,12 @@ public function queryDataForMonthlyPartyChart(Season $season)
             ->setParameter('firstDay', $season->getStart()->format('Y-m-d H:i:s'))
             ->setParameter('lastDay', $season->getEnd()->format('Y-m-d H:i:s'));
 
-        return $query->execute()->fetchAll();
+        return $query->fetchAllAssociative();
     }
 
+    /**
+     * @throws Exception
+     */
     public function queryDataForYearlyPartyChart(): array
     {
         $featuredYears = $this->featuredYearsQuery->getFeaturedYears();
@@ -74,7 +87,7 @@ public function queryDataForYearlyPartyChart(): array
                 ->setParameter('firstDay', $firstDay)
                 ->setParameter('lastDay', $lastDay);
 
-            $chartData = $query->execute()->fetchAll();
+            $chartData = $query->fetchAllAssociative();
 
             $party = [
                 'year' => $year,
@@ -87,7 +100,10 @@ public function queryDataForYearlyPartyChart(): array
         return $partyChartData;
     }
 
-    public function queryDataForPartyChartUntilDate(\DateTime $date)
+    /**
+     * @throws Exception
+     */
+    public function queryDataForPartyChartUntilDate(\DateTime $date): array
     {
         $query = $this->dbal->createQueryBuilder()
             ->select('count(p.id) AS totalPartyCount, p.sent_date AS month')
@@ -96,7 +112,7 @@ public function queryDataForPartyChartUntilDate(\DateTime $date)
             ->groupBy('year(p.sent_date), month(p.sent_date)')
             ->setParameter('lastDay', $date->format('Y-m-d H:i:s'));
 
-        $totalPartyChartData = $query->execute()->fetchAll();
+        $totalPartyChartData = $query->fetchAllAssociative();
 
         $accumulatedPartyCounter = 0;
 
@@ -108,7 +124,7 @@ public function queryDataForPartyChartUntilDate(\DateTime $date)
         return $totalPartyChartData;
     }
 
-    public function calculatePartyCountDifferenceBetweenSeasons(Season $season1, Season $season2)
+    public function calculatePartyCountDifferenceBetweenSeasons(Season $season1, Season $season2): int
     {
         $partyCountSeason1 = $this->countParties($season1);
 
diff --git a/src/Query/WishlistMailQuery.php b/src/Query/WishlistMailQuery.php
index f54ff687..69e9484a 100644
--- a/src/Query/WishlistMailQuery.php
+++ b/src/Query/WishlistMailQuery.php
@@ -4,6 +4,7 @@
 
 use App\Entity\Participant;
 use Doctrine\DBAL\Connection;
+use Doctrine\DBAL\Exception;
 
 class WishlistMailQuery
 {
@@ -14,7 +15,10 @@ public function __construct(Connection $dbal)
         $this->dbal = $dbal;
     }
 
-    public function countWishlistItemsOfParticipant(Participant $participant)
+    /**
+     * @throws Exception
+     */
+    public function countWishlistItemsOfParticipant(Participant $participant): array
     {
         $query = $this->dbal->createQueryBuilder()
             ->select('count(w.id) AS wishlistItemCount')
@@ -22,6 +26,6 @@ public function countWishlistItemsOfParticipant(Participant $participant)
             ->where('w.participant_id = :participantId')
             ->setParameter('participantId', $participant->getId());
 
-        return $query->execute()->fetchAll();
+        return $query->fetchAllAssociative();
     }
 }
diff --git a/src/Query/WishlistReportQuery.php b/src/Query/WishlistReportQuery.php
index 92b2d98d..89d87c4f 100644
--- a/src/Query/WishlistReportQuery.php
+++ b/src/Query/WishlistReportQuery.php
@@ -3,6 +3,7 @@
 namespace App\Query;
 
 use Doctrine\DBAL\Connection;
+use Doctrine\DBAL\Exception;
 
 class WishlistReportQuery
 {
@@ -15,6 +16,9 @@ public function __construct(Connection $dbal, ParticipantReportQuery $participan
         $this->participantReportQuery = $participantReportQuery;
     }
 
+    /**
+     * @throws Exception
+     */
     public function calculateCompletedWishlists(Season $season): float
     {
         $wishlistCount = $this->countWishlists($season);
@@ -27,7 +31,10 @@ public function calculateCompletedWishlists(Season $season): float
         return ($wishlistCount[0]['wishlistCount'] / $participantCount) * 100;
     }
 
-    private function countWishlists(Season $season)
+    /**
+     * @throws Exception
+     */
+    private function countWishlists(Season $season): array
     {
         $query = $this->dbal->createQueryBuilder()
             ->select('count(p.id) AS wishlistCount')
@@ -39,9 +46,12 @@ private function countWishlists(Season $season)
             ->setParameter('firstDay', $season->getStart()->format('Y-m-d H:i:s'))
             ->setParameter('lastDay', $season->getEnd()->format('Y-m-d H:i:s'));
 
-        return $query->execute()->fetchAll();
+        return $query->fetchAllAssociative();
     }
 
+    /**
+     * @throws Exception
+     */
     public function calculateCompletedWishlistsUntilDate(\DateTime $date): float
     {
         $totalWishlists = $this->countAllWishlistsUntilDate($date);
@@ -54,7 +64,10 @@ public function calculateCompletedWishlistsUntilDate(\DateTime $date): float
         throw new NoResultException();
     }
 
-    private function countAllWishlistsUntilDate(\DateTime $date)
+    /**
+     * @throws Exception
+     */
+    private function countAllWishlistsUntilDate(\DateTime $date): array
     {
         $query = $this->dbal->createQueryBuilder()
             ->select('count(p.id) AS totalWishlistCount')
@@ -64,9 +77,12 @@ private function countAllWishlistsUntilDate(\DateTime $date)
             ->andWhere('wishlist_updated_time IS NOT NULL')
             ->setParameter('lastDay', $date->format('Y-m-d H:i:s'));
 
-        return $query->execute()->fetchAll();
+        return $query->fetchAllAssociative();
     }
 
+    /**
+     * @throws Exception
+     */
     public function calculateCompletedWishlistDifferenceBetweenSeasons(Season $season1, Season $season2): float
     {
         $completedWishlistsSeason1 = $this->calculateCompletedWishlists($season1);
diff --git a/src/Service/ExportService.php b/src/Service/ExportService.php
index 4a4779dc..6fe1c6e2 100644
--- a/src/Service/ExportService.php
+++ b/src/Service/ExportService.php
@@ -58,7 +58,7 @@ private function getPartyReuseBaseUrl(): string
     {
         $url = $this->router->generate(
             'party_reuse',
-            ['listurl' => '1'],
+            ['listurl' => '1', '_locale' => 'en'],
             UrlGeneratorInterface::ABSOLUTE_URL
         );
 
diff --git a/src/Validator/ParticipantHasValidExcludesValidator.php b/src/Validator/ParticipantHasValidExcludesValidator.php
index c9270c87..6dd52cde 100644
--- a/src/Validator/ParticipantHasValidExcludesValidator.php
+++ b/src/Validator/ParticipantHasValidExcludesValidator.php
@@ -12,7 +12,7 @@ class ParticipantHasValidExcludesValidator extends ConstraintValidator
      * @param Participant                 $participant
      * @param ParticipantHasValidExcludes $constraint
      */
-    public function validate($participant, Constraint $constraint)
+    public function validate($participant, Constraint $constraint): void
     {
         $party = $participant->getParty();
         // should be at least 2 possible participants remaining to choose from, -1 for itself
diff --git a/src/Validator/ParticipantIsNotBlacklistedValidator.php b/src/Validator/ParticipantIsNotBlacklistedValidator.php
index f875035f..27506126 100644
--- a/src/Validator/ParticipantIsNotBlacklistedValidator.php
+++ b/src/Validator/ParticipantIsNotBlacklistedValidator.php
@@ -24,7 +24,7 @@ public function __construct(
     /**
      * @param string $email
      */
-    public function validate($email, Constraint $constraint)
+    public function validate($email, Constraint $constraint): void
     {
         $email = $this->hashService->hashEmail($email);
         $repository = $this->em->getRepository(BlacklistEmail::class);