Fatal error: Uncaught Error: Interface "Symfony\Component\Config\Loader\LoaderInterface" not found in C:\AppServ\Apache\2.4.58\htdocs\sets\vendor\symfony\routing\Loader\AnnotationClassLoader.php:73 Stack trace: #0 {main} thrown in C:\AppServ\Apache\2.4.58\htdocs\sets\vendor\symfony\routing\Loader\AnnotationClassLoader.php on line 73