$validator = Validator::make($request->all(), [
            'email' => 'email|unique:users',
            'password' => 'min:6|confirmed',
        ]);

        if ($validator->fails()) {
            return redirect('admin.test')
                ->withErrors($validator)
                ->withInput();
        }

$this->validate($request, [
            'email' => 'email|unique:users',
            'password' => 'min:6|confirmed',
        ]);