Method Illuminate\Validation\Validator::validateRequried does not exist.

Hello everyone I am facing this error with laravel when I use the condition $validator->fails(); my code is 

 public function login(Request $req){ $validator = Validator::make($req->all(), [ 'email' => 'required|email', 'password' => 'requried', ]); if ($validator->fails()) { return response()->json($validator->errors(), 400); } if(Auth::guard('regular_users')->attempt(['email' => request('email') , 'password' => request('password')])){ $token = Str::random(60); $request->user()->forceFill([ 'api_token' => hash('sha256', $token), ])->save(); return response()->json([ "token" => $token ], 200); } else { return response()->json(['Error'], 400); } }

What is problem please help!