Fatal error: Uncaught Error: Class 'Symfony\Component\Routing\RouteCollection' not found in E:\xampp\htdocs\vendor\symfony\routing\Tests\Fixtures\with_define_path_variable.php:5 Stack trace: #0 {main} thrown in E:\xampp\htdocs\vendor\symfony\routing\Tests\Fixtures\with_define_path_variable.php on line 5