Fatal error: Uncaught Error: Class 'SebastianBergmann\Diff\InvalidArgumentException' not found in C:\xampp73\htdocs\web\vendor\sebastian\diff\src\Exception\ConfigurationException.php:18 Stack trace: #0 {main} thrown in C:\xampp73\htdocs\web\vendor\sebastian\diff\src\Exception\ConfigurationException.php on line 18