Fatal error: Uncaught Error: Interface "SebastianBergmann\Invoker\Exception" not found in /home/wwwarms/ws.arms-tools.com/websocket-server/vendor/phpunit/php-invoker/src/exceptions/ProcessControlExtensionNotLoadedException.php:17 Stack trace: #0 {main} thrown in /home/wwwarms/ws.arms-tools.com/websocket-server/vendor/phpunit/php-invoker/src/exceptions/ProcessControlExtensionNotLoadedException.php on line 17