Various code cleanup.

app/Http/Controllers/Auth/LoginController.php

@@ -46,6 +46,8 @@ use Illuminate\Routing\Redirector;
 use Illuminate\Support\Facades\DB;
 use Illuminate\Support\Facades\Log;
 use Illuminate\Validation\ValidationException;
+use Psr\Container\ContainerExceptionInterface;
+use Psr\Container\NotFoundExceptionInterface;
 use Symfony\Component\HttpFoundation\Response as ResponseAlias;
 
 /**
@@ -151,7 +153,7 @@ class LoginController extends Controller
         $this->sendFailedLoginResponse($request);
 
         // @noinspection PhpUnreachableStatementInspection
-        return response()->json([]);
+        return response()->json();
     }
 
     /**
@@ -219,9 +221,13 @@ class LoginController extends Controller
     /**
      * Show the application's login form.
      *
+     * @param Request $request
+     *
      * @return Application|Factory|Redirector|RedirectResponse|View
      *
      * @throws FireflyException
+     * @throws ContainerExceptionInterface
+     * @throws NotFoundExceptionInterface
      */
     public function showLoginForm(Request $request)
     {