Fatal error: Uncaught Error: Class "Symfony\Component\Debug\Exception\FlattenException" not found in C:\Apache24\htdocs\cw\vendor\symfony\error-handler\Exception\FlattenException.php:27 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\cw\vendor\symfony\error-handler\Exception\FlattenException.php on line 27