Error: Interface "OCA\Files_Versions\Versions\INeedSyncVersionBackend" not found in /var/www/html/custom_apps/groupfolders/lib/Versions/VersionsBackend.php:46

[MrNunu]

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Steps to reproduce

1. Installed Nextcloud AIO 4.x, Nextcloud 25.x in Feb 2023 and probably GroupFolder 14.0.
2. Keep updating both Nextcloud and GroupFolder, almost never skipping versions.

Expected behaviour

No error logs

Actual behaviour

Seems to be getting some version of the issues that have been reported in #2566 or #2548, but I don't have problems with either cron or occ command. Both work and as far as I can tell, everything actually works. But I'm getting a constant flood of error logs like this:

[no app in context] Warning: AppManger::checkAppForUser - can't decode group IDs: An unhandled exception has been thrown:
Error: Interface "OCA\Files_Versions\Versions\INeedSyncVersionBackend" not found in /var/www/html/custom_apps/groupfolders/lib/Versions/VersionsBackend.php:46
Stack trace:
#0 /var/www/html/lib/composer/composer/ClassLoader.php(582): include()
#1 /var/www/html/lib/composer/composer/ClassLoader.php(433): Composer\Autoload\{closure}('/var/www/html/c...')
#2 /var/www/html/custom_apps/groupfolders/lib/AppInfo/Application.php(138): Composer\Autoload\ClassLoader->loadClass('OCA\\GroupFolder...')
#3 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(171): OCA\GroupFolders\AppInfo\Application->OCA\GroupFolders\AppInfo\{closure}(Object(OC\AppFramework\DependencyInjection\DIContainer))
#4 /var/www/html/3rdparty/pimple/pimple/src/Pimple/Container.php(122): OC\AppFramework\Utility\SimpleContainer->OC\AppFramework\Utility\{closure}(Object(Pimple\Container))
#5 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(138): Pimple\Container->offsetGet('OCA\\GroupFolder...')
#6 /var/www/html/lib/private/AppFramework/DependencyInjection/DIContainer.php(488): OC\AppFramework\Utility\SimpleContainer->query('OCA\\GroupFolder...')
#7 /var/www/html/lib/private/AppFramework/DependencyInjection/DIContainer.php(466): OC\AppFramework\DependencyInjection\DIContainer->queryNoFallback('OCA\\GroupFolder...')
#8 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(97): OC\AppFramework\DependencyInjection\DIContainer->query('OCA\\GroupFolder...', true)
#9 [internal function]: OC\AppFramework\Utility\SimpleContainer->OC\AppFramework\Utility\{closure}(Object(ReflectionParameter))
#10 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(116): array_map(Object(Closure), Array)
#11 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(124): OC\AppFramework\Utility\SimpleContainer->buildClass(Object(ReflectionClass))
#12 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(142): OC\AppFramework\Utility\SimpleContainer->resolve('OCA\\GroupFolder...')
#13 /var/www/html/lib/private/AppFramework/DependencyInjection/DIContainer.php(494): OC\AppFramework\Utility\SimpleContainer->query('OCA\\GroupFolder...')
#14 /var/www/html/lib/private/AppFramework/DependencyInjection/DIContainer.php(466): OC\AppFramework\DependencyInjection\DIContainer->queryNoFallback('OCA\\GroupFolder...')
#15 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(65): OC\AppFramework\DependencyInjection\DIContainer->query('OCA\\GroupFolder...')
#16 /var/www/html/custom_apps/groupfolders/lib/AppInfo/Application.php(158): OC\AppFramework\Utility\SimpleContainer->get('OCA\\GroupFolder...')
#17 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(171): OCA\GroupFolders\AppInfo\Application->OCA\GroupFolders\AppInfo\{closure}(Object(OC\AppFramework\DependencyInjection\DIContainer))
#18 /var/www/html/3rdparty/pimple/pimple/src/Pimple/Container.php(122): OC\AppFramework\Utility\SimpleContainer->OC\AppFramework\Utility\{closure}(Object(Pimple\Container))
#19 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(138): Pimple\Container->offsetGet('OCA\\GroupFolder...')
#20 /var/www/html/lib/private/AppFramework/DependencyInjection/DIContainer.php(488): OC\AppFramework\Utility\SimpleContainer->query('OCA\\GroupFolder...')
#21 /var/www/html/lib/private/ServerContainer.php(155): OC\AppFramework\DependencyInjection\DIContainer->queryNoFallback('OCA\\GroupFolder...')
#22 /var/www/html/lib/private/Console/Application.php(217): OC\ServerContainer->query('OCA\\GroupFolder...')
#23 /var/www/html/lib/private/Console/Application.php(131): OC\Console\Application->loadCommandsFromInfoXml(Array)
#24 /var/www/html/console.php(99): OC\Console\Application->loadCommands(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#25 /var/www/html/occ(11): require_once('/var/www/html/c...')
#26 {main} - json error code: 4

I tried disabling the application and the logs continue. I tried deleting the application and the logs continue. And of course I reinstalled and the logs continue.

Server configuration

Operating system: Ubuntu 23.04

Web server: Apache/2.4.58 (Unix) (Included with AIO)

Database: PostgreSQL 15.6 (Included with AIO)

PHP version: 8.1.27 (Included with AIO)

Nextcloud version: (see Nextcloud admin page) 28.0.3

Group folders version: 16.0.4

Updated from an older Nextcloud/ownCloud or fresh install: Update from Nextcloud 25.x

Where did you install Nextcloud from: Nextcloud AIO Docker Compose

Are you using external storage, if yes which one: smb, but not used in Group Folders

Are you using encryption: no

Are you using an external user-backend, if yes which one: no

Client configuration

Browser: Firefox 123.0

Operating system: Windows 11

Logs

Web server error log

Web server error log

Unsure where to get those in AIO

Nextcloud log (data/nextcloud.log)

Nextcloud log

[no app in context] Warning: AppManger::checkAppForUser - can't decode group IDs: An unhandled exception has been thrown:
Error: Interface "OCA\Files_Versions\Versions\INeedSyncVersionBackend" not found in /var/www/html/custom_apps/groupfolders/lib/Versions/VersionsBackend.php:46
Stack trace:
#0 /var/www/html/lib/composer/composer/ClassLoader.php(582): include()
#1 /var/www/html/lib/composer/composer/ClassLoader.php(433): Composer\Autoload\{closure}('/var/www/html/c...')
#2 /var/www/html/custom_apps/groupfolders/lib/AppInfo/Application.php(138): Composer\Autoload\ClassLoader->loadClass('OCA\\GroupFolder...')
#3 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(171): OCA\GroupFolders\AppInfo\Application->OCA\GroupFolders\AppInfo\{closure}(Object(OC\AppFramework\DependencyInjection\DIContainer))
#4 /var/www/html/3rdparty/pimple/pimple/src/Pimple/Container.php(122): OC\AppFramework\Utility\SimpleContainer->OC\AppFramework\Utility\{closure}(Object(Pimple\Container))
#5 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(138): Pimple\Container->offsetGet('OCA\\GroupFolder...')
#6 /var/www/html/lib/private/AppFramework/DependencyInjection/DIContainer.php(488): OC\AppFramework\Utility\SimpleContainer->query('OCA\\GroupFolder...')
#7 /var/www/html/lib/private/AppFramework/DependencyInjection/DIContainer.php(466): OC\AppFramework\DependencyInjection\DIContainer->queryNoFallback('OCA\\GroupFolder...')
#8 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(97): OC\AppFramework\DependencyInjection\DIContainer->query('OCA\\GroupFolder...', true)
#9 [internal function]: OC\AppFramework\Utility\SimpleContainer->OC\AppFramework\Utility\{closure}(Object(ReflectionParameter))
#10 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(116): array_map(Object(Closure), Array)
#11 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(124): OC\AppFramework\Utility\SimpleContainer->buildClass(Object(ReflectionClass))
#12 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(142): OC\AppFramework\Utility\SimpleContainer->resolve('OCA\\GroupFolder...')
#13 /var/www/html/lib/private/AppFramework/DependencyInjection/DIContainer.php(494): OC\AppFramework\Utility\SimpleContainer->query('OCA\\GroupFolder...')
#14 /var/www/html/lib/private/AppFramework/DependencyInjection/DIContainer.php(466): OC\AppFramework\DependencyInjection\DIContainer->queryNoFallback('OCA\\GroupFolder...')
#15 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(65): OC\AppFramework\DependencyInjection\DIContainer->query('OCA\\GroupFolder...')
#16 /var/www/html/custom_apps/groupfolders/lib/AppInfo/Application.php(158): OC\AppFramework\Utility\SimpleContainer->get('OCA\\GroupFolder...')
#17 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(171): OCA\GroupFolders\AppInfo\Application->OCA\GroupFolders\AppInfo\{closure}(Object(OC\AppFramework\DependencyInjection\DIContainer))
#18 /var/www/html/3rdparty/pimple/pimple/src/Pimple/Container.php(122): OC\AppFramework\Utility\SimpleContainer->OC\AppFramework\Utility\{closure}(Object(Pimple\Container))
#19 /var/www/html/lib/private/AppFramework/Utility/SimpleContainer.php(138): Pimple\Container->offsetGet('OCA\\GroupFolder...')
#20 /var/www/html/lib/private/AppFramework/DependencyInjection/DIContainer.php(488): OC\AppFramework\Utility\SimpleContainer->query('OCA\\GroupFolder...')
#21 /var/www/html/lib/private/ServerContainer.php(155): OC\AppFramework\DependencyInjection\DIContainer->queryNoFallback('OCA\\GroupFolder...')
#22 /var/www/html/lib/private/Console/Application.php(217): OC\ServerContainer->query('OCA\\GroupFolder...')
#23 /var/www/html/lib/private/Console/Application.php(131): OC\Console\Application->loadCommandsFromInfoXml(Array)
#24 /var/www/html/console.php(99): OC\Console\Application->loadCommands(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#25 /var/www/html/occ(11): require_once('/var/www/html/c...')
#26 {main} - json error code: 4

Browser log

Browser log

Insert your browser log here, this could for example include:

a) The javascript console log
b) The network log
c) ...

[Kryptopirat]

I also have this problem, but I with the normal installation.

[MrNunu]

Is there anything else I can provide as far as logs, files, configs or anything else that could help clarify this problem?

[joshtrichards]

nextcloud/all-in-one#4806 (comment)

Also the error messaging is improved a bit now too (though it really should never occur; it was a freak bug in AIO that brought it out most recently)

nextcloud/server#45737

[joshtrichards]

Do you have the Versions app enabled?

[provokateurin]

Yeah, there seems to be no check if the files_versions app is enabled. If it is disabled the class is not available so VersionsBackend can not be instantiated.