OK The controller must return a response (null given). Did you forget to add a return statement somewhere in your controller? 500 Internal Server Error - LogicException Stack Trace in kernel.root_dir/bootstrap.php.cache at line 2999 if (null === $response) { $msg .=' Did you forget to add a return statement somewhere in your controller?'; } throw new \LogicException($msg); } } return $this->filterResponse($response, $request, $type); at HttpKernel ->handleRaw (object(Request), '1') in kernel.root_dir/bootstrap.php.cache at line 2949 at HttpKernel ->handle (object(Request), '1', true) in kernel.root_dir/bootstrap.php.cache at line 3098 at ContainerAwareHttpKernel ->handle (object(Request), '1', true) in kernel.root_dir/bootstrap.php.cache at line 2348 at Kernel ->handle (object(Request)) in /var/www/git/public/index.php at line 33 Logs Stack Trace (Plain Text)