Fatal error: Uncaught Error: Class 'Symfony\Component\Debug\Exception\FatalErrorException' not found in C:\Apache24\htdocs\vendor.old\symfony\debug\Exception\UndefinedMethodException.php:19 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\vendor.old\symfony\debug\Exception\UndefinedMethodException.php on line 19