Fatal error: Uncaught Error: Call to undefined function Symfony\Component\Security\Http\Logout\trigger_deprecation() in I:\www\frameworks\Symfony\doctrine\vendor\symfony\security-http\Logout\CsrfTokenClearingLogoutHandler.php:20 Stack trace: #0 {main} thrown in I:\www\frameworks\Symfony\doctrine\vendor\symfony\security-http\Logout\CsrfTokenClearingLogoutHandler.php on line 20