Fatal error: Uncaught Error: Class "Intervention\Image\Modifiers\GreyscaleModifier" not found in D:\programs\xampp\htdocs\backend-test\vendor\intervention\image\src\Drivers\Gd\Modifiers\GreyscaleModifier.php:11 Stack trace: #0 {main} thrown in D:\programs\xampp\htdocs\backend-test\vendor\intervention\image\src\Drivers\Gd\Modifiers\GreyscaleModifier.php on line 11