No need to use config helper.

Author: Lucas Michot

src/DumpServerServiceProvider.php

@@ -40,7 +40,7 @@ public function register()
             'command.dumpserver',
         ]);
 
-        $host = config('debug-server.host');
+        $host = $this->app['config']->get('debug-server.host');
 
         $this->app->when(DumpServer::class)->needs('$host')->give($host);