Fix: for frontend pages with Server Error 500 when accessed by guests or users with basic permissions

Author: d0ubIeU

phpmyfaq/src/phpMyFAQ/Permission/BasicPermission.php

@@ -275,4 +275,16 @@ public function refuseAllUserRights(int $userId): bool
     {
         return $this->repository->refuseAllUserRights($userId);
     }
+
+    /**
+     * Returns an array with the IDs of all groups the user belongs to.
+     * Since this is BasicPermission, always return an empty array.
+     *
+     * @param int $userId User ID
+     * @return array<int>
+     */
+    public function getUserGroups(int $userId): array
+    {
+        return [];
+    }
 }