Fatal error: Uncaught Error: Class "League\Flysystem\UnableToCheckExistence" not found in C:\xampp\htdocs\BoostForge\vendor\league\flysystem\src\UnableToCheckFileExistence.php:7 Stack trace: #0 {main} thrown in C:\xampp\htdocs\BoostForge\vendor\league\flysystem\src\UnableToCheckFileExistence.php on line 7