Fatal error: Uncaught Error: Interface "Phpfastcache\Config\ConfigurationOptionInterface" not found in C:\xampp\htdocs\vendor\Phpfastcache\Config\IOConfigurationOptionInterface.php:19 Stack trace: #0 {main} thrown in C:\xampp\htdocs\vendor\Phpfastcache\Config\IOConfigurationOptionInterface.php on line 19