public function start(Request $request, AuthenticationException $authException = null)
    {
        return new Response(
            $this->twig->render('@StarterKitStart/oauth-start.html.twig', ['login_path' => $this->loginPath])
        );
    }
public function start(Request $request, AuthenticationException $authException = null)
    {
        return new Response(
            $this->twig->render('@StarterKitStart/oauth-start.html.twig', ['login_path' => $this->loginPath])
        );
    }
public function start ( Request $ request , AuthenticationException $ authException = null ) { return new Response ( $ this -> twig -> render ( '@StarterKitStart/oauth-start.html.twig' , [ 'login_path' => $ this -> loginPath ] ) ) ; }
This will be fired when the user clicks cancel on slack or third party site.  This page will redirect the user
back to the login path.

@param Request $request
@param AuthenticationException|null $authException
@return Response
This will be fired when the user clicks cancel on slack or third party site . This page will redirect the user back to the login path .