React-native Get current user failed. 问题

react-native 使用 "avoscloud-sdk": "^1.0.0-rc7"

    User.logIn(this.state.username, this.state.password).then((currentUser)=>{
      Alert.alert('Success',
        'Welcome back',
        [
          {text: 'OK'},
        ]
      )
      // that.props.navigator.popToTop();
    }).catch(function(error) {
      Alert.alert('Error',
        error.message,
        [
          {text: 'OK'},
        ]
      )
    });

之后报错 Get current user failed. It seems this runtime use an async storage system, please new AV.File in the callback of AV.User.currentAsync().
实际是已经登陆了。