Fatal error: Uncaught Error: Class "Symfony\Component\Process\Exception\RuntimeException" not found in D:\Webserver\Apache24\htdocs\laravel\basic\vendor\symfony\process\Exception\ProcessFailedException.php:21 Stack trace: #0 {main} thrown in D:\Webserver\Apache24\htdocs\laravel\basic\vendor\symfony\process\Exception\ProcessFailedException.php on line 21