Issue #3476783: Error when accessing the plugin settings page

src/Form/SettingsPluginForm.php

@@ -3,6 +3,7 @@
 namespace Drupal\documentation_generator\Form;
 
 use Drupal\Core\Config\ConfigFactoryInterface;
+use Drupal\Core\Config\TypedConfigManagerInterface;
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\Core\Form\ConfigFormBase;
 use Drupal\documentation_generator\Plugin\DocumentationGeneratorChapterManager;
@@ -30,9 +31,8 @@ class SettingsPluginForm extends ConfigFormBase {
    * @param \Drupal\documentation_generator\Plugin\DocumentationGeneratorChapterManager $chapterManager
    *   The documentation generator chapter manager.
    */
-  public function __construct(ConfigFactoryInterface $config_factory,
-                              DocumentationGeneratorChapterManager $chapterManager) {
-    parent::__construct($config_factory);
+  public function __construct(ConfigFactoryInterface $config_factory, TypedConfigManagerInterface $typedConfigManager, DocumentationGeneratorChapterManager $chapterManager) {
+    parent::__construct($config_factory, $typedConfigManager);
     $this->chapterManager = $chapterManager;
   }
 
@@ -42,6 +42,7 @@ class SettingsPluginForm extends ConfigFormBase {
   public static function create(ContainerInterface $container) {
     return new static(
       $container->get('config.factory'),
+      $container->get('config.typed'),
       $container->get('plugin.manager.documentation_generator_chapter.processor')
     );
   }