Fatal error: Uncaught Error: Class "Symfony\Component\Config\Loader\Loader" not found in /home/wwwarms/ws.arms-tools.com/websocket-server/vendor/symfony/routing/Loader/Psr4DirectoryLoader.php:25 Stack trace: #0 {main} thrown in /home/wwwarms/ws.arms-tools.com/websocket-server/vendor/symfony/routing/Loader/Psr4DirectoryLoader.php on line 25