Fatal error: Uncaught Error: Interface 'Symfony\Component\HttpKernel\CacheClearer\CacheClearerInterface' not found in D:\xampp\htdocs\psp\backend\vendor\symfony\http-kernel\CacheClearer\ChainCacheClearer.php:21 Stack trace: #0 {main} thrown in D:\xampp\htdocs\psp\backend\vendor\symfony\http-kernel\CacheClearer\ChainCacheClearer.php on line 21