Issue #3338934: Use query->all() instead of query->get() to fix compatibility with Drupal 10

modules/tagify_user_list/src/Controller/TagifyUserListEntityAutocompleteController.php

@@ -99,7 +99,7 @@ class TagifyUserListEntityAutocompleteController extends ControllerBase {
         // key/value store.
         throw new AccessDeniedHttpException();
       }
-      $matches = $this->matcher->getUserMatches($target_type, $selection_handler, $selection_settings, mb_strtolower($input), $request->query->get('selected', []));
+      $matches = $this->matcher->getUserMatches($target_type, $selection_handler, $selection_settings, mb_strtolower($input), $request->query->all('selected'));
     }
 
     return new JsonResponse($matches);