Fix output issue when containerId is not set

.craftplugin

@@ -1 +1 @@
-{"pluginName":"Google Tag Manager","pluginDescription":"Google Tag Manager","pluginVersion":"1.0.1,1.0.0","pluginAuthorName":"La Haute Société","pluginVendorName":"lhs","pluginAuthorUrl":"https://www.lahautesociete.com","pluginAuthorGithub":"","codeComments":"","pluginComponents":["settings","variables"],"consolecommandName":"","controllerName":"","cpsectionName":"","elementName":"","fieldName":"","modelName":"","purchasableName":"","recordName":"","serviceName":"","taskName":"","utilityName":"","widgetName":"","apiVersion":"api_version_3_0"}
+{"pluginName":"Google Tag Manager","pluginDescription":"Google Tag Manager","pluginVersion":"1.0.2,1.0.1,1.0.0","pluginAuthorName":"La Haute Société","pluginVendorName":"lhs","pluginAuthorUrl":"https://www.lahautesociete.com","pluginAuthorGithub":"","codeComments":"","pluginComponents":["settings","variables"],"consolecommandName":"","controllerName":"","cpsectionName":"","elementName":"","fieldName":"","modelName":"","purchasableName":"","recordName":"","serviceName":"","taskName":"","utilityName":"","widgetName":"","apiVersion":"api_version_3_0"}

CHANGELOG.md

@@ -1,5 +1,10 @@
 # Google Tag Manager Changelog
 
+## 1.0.2 - 2019-03-13
+
+### Fixed
+- Output issue when containerId was not set
+
 ## 1.0.1 - 2019-03-08
 
 ### Fixed

composer.json

@@ -2,7 +2,7 @@
     "name": "la-haute-societe/craft-google-tag-manager",
     "description": "This Craft 3 plugin allows you to configure the Google Tag Manager \"ContainerID\" from the control panel and inject the GTM tags into the template.",
     "type": "craft-plugin",
-    "version": "1.0.1",
+    "version": "1.0.2",
     "keywords": [
         "craft",
         "cms",
@@ -32,7 +32,7 @@
     "extra": {
         "name": "Google Tag Manager",
         "handle": "google-tag-manager",
-        "schemaVersion": "1.0.1",
+        "schemaVersion": "1.0.2",
         "hasCpSettings": true,
         "hasCpSection": false,
         "changelogUrl": "https://github.com/la-haute-societe/craft-google-tag-manager/blob/master/CHANGELOG.md",

src/GoogleTagManager.php

@@ -41,7 +41,7 @@ class GoogleTagManager extends Plugin
     /**
      * @var string
      */
-    public $schemaVersion = '1.0.0';
+    public $schemaVersion = '1.0.2';
 
     // Public Methods
     // =========================================================================

src/variables/GoogleTagManagerVariable.php

@@ -34,7 +34,7 @@ public function headSection()
         $containerID = GoogleTagManager::getInstance()->getSettings()->containerID;
 
         if (!$containerID) {
-            return '<!-- GoogleTagManage plugin : containerID is not set -->';
+            return new \Twig\Markup('<!-- GoogleTagManage plugin : containerID is not set -->', 'UTF-8');
         }
 
         return $this->renderPluginTemplate('head', [
@@ -52,7 +52,7 @@ public function bodySection()
         $containerID = GoogleTagManager::getInstance()->getSettings()->containerID;
 
         if (!$containerID) {
-            return '<!-- GoogleTagManage plugin : containerID is not set -->';
+            return new \Twig\Markup('<!-- GoogleTagManage plugin : containerID is not set -->', 'UTF-8');
         }
 
         return $this->renderPluginTemplate('body', [