Fatal error: Uncaught Error: Interface "Phpfastcache\Exceptions\PhpfastcacheExceptionInterface" not found in C:\xampp\htdocs\vendor\Phpfastcache\Exceptions\PhpfastcacheRootException.php:21 Stack trace: #0 {main} thrown in C:\xampp\htdocs\vendor\Phpfastcache\Exceptions\PhpfastcacheRootException.php on line 21