Fatal error: Uncaught Error: Class "Intervention\Image\Colors\AbstractColorChannel" not found in C:\xampp\htdocs\vendor\intervention\image\src\Colors\Hsl\Channels\Luminance.php:9 Stack trace: #0 {main} thrown in C:\xampp\htdocs\vendor\intervention\image\src\Colors\Hsl\Channels\Luminance.php on line 9