Fatal error: Uncaught Error: Undefined constant "PKP\submission\reviewer\PKP_STRICT_MODE" in C:\xampp\htdocs\ojs\lib\pkp\classes\submission\reviewer\ReviewerAction.php:169 Stack trace: #0 {main} thrown in C:\xampp\htdocs\ojs\lib\pkp\classes\submission\reviewer\ReviewerAction.php on line 169