Notice: Undefined variable: g_app in C:\wamp\www\mantisbt\api\rest\restcore\lang_rest.php on line 25

Fatal error: Uncaught Error: Call to a member function group() on null in C:\wamp\www\mantisbt\api\rest\restcore\lang_rest.php:25 Stack trace: #0 {main} thrown in C:\wamp\www\mantisbt\api\rest\restcore\lang_rest.php on line 25