数据绑定错误 - 找不到访问者

Question

我正在关注本教程two way databinding，但我收到了流动的错误

Found data binding errors.
****/ data binding error ****msg:Could not find accessor com.salman.androiddatabinding.model.User.emailError file:/Users/salman/Desktop/Android/ComapnyProjectsEziline/AndroidDataBinding/app/src/main/res/layout/activity_main.xml loc:28:25 - 28:39 ****\ data binding error ****

用户类 http://txt.do/df5x0

XML http://txt.do/df5xk

MainActivity

ActivityMainBinding binding = DataBindingUtil.setContentView(this,R.layout.activity_main);
        User user = new User();
        user.setConfirmPassword("");
        user.setEmail("");
        user.setPassword("");
        binding.setUser(user);