无法从React组件中的道具读取属性

在ChatRoom组件中，我试图在2个用户之间加载聊天，以呈现聊天的用户名。要聊天，我正在关闭getCurrentChat功能。

ChatRoom 零件

// importing everything
import { getCurrentChat } from '../../actions/chatActions';

class ChatRoom extends Component {
   componentDidMount() {
      // loading chat between 2 people
      this.props.getCurrentChat(this.props.match.params.chatId); 
   };

   render() {
      const { loadingCurrentChat } = this.props.chat;
      console.log(this.props.chat.currentChat);

      return (
         <div className="container">
            {loadingCurrentChat ? <Spinner /> : (
               <div className="row">
                  <h3>ChatId: {this.props.chat.currentChat._id}</h3>

                  <h2>Chat between {this.props.chat.currentChat.user1.name} и {this.props.chat.currentChat.user2.name}</h2>
               </div>
            )}
         </div>
       )
   }
}

const mapStateToProps = (state) => ({
   auth: state.auth,
   chat: state.chat
});

export default connect(mapStateToProps, { getCurrentChat })(withRouter(ChatRoom));

chatActions.js

export const getCurrentChat = (chatId) => (dispatch) => {
  dispatch(setLoadingCurrentChat());
  axios.get(`/chat/${chatId}`)
    .then(res =>
      dispatch({
        type: GET_CURRENT_CHAT,
        payload: res.data
      })
    )
    .catch(err =>
      dispatch({
        type: GET_ERRORS,
        payload: err
      })
    );
};

chatReducer.js

// importing everything
const initialState = {
  currentChat: {},
  loadingCurrentChat: false,
};

export default function (state = initialState, action) {
  switch (action.type) {
    case SET_LOADING_CURRENT_CHAT:
      return {
        ...state,
        loadingCurrentChat: true
      }
    case GET_CURRENT_CHAT:
      return {
        ...state,
        currentChat: action.payload,
        loadingCurrentChat: false
      }
  }
}

我处理来自chatActions.js-的请求的服务器文件chatController.js

// requiring everything

exports.getCurrentChat = (req, res) => {
  const chatId = req.params.chatId;
  Chat.findById(chatId)
    .populate('user1')
    .populate('user2')
    .exec()
    .then(chat => res.json(chat))
    .catch(err => res.status(400).json(err));
  };

当我尝试console.log了currentChat中ChatRoom，它正确地显示在聊天。

currentChat:

     messages: []
     user1: {
        _id: "5d1328a91e0e5320706cdabb", 
        name: "sarvar", 
     }
     user2: {
        _id: "5d131405ce36ce0ebcf76ae1", 
        name: "jalol makhmudov"
      }
     __v: 0
     _id: "5d329aea3f34fe0b8c6cf336"

如果我渲染currentChat._id（请参阅中的<h3>元素ChatRoom），则会正确显示它。

但是如果我渲染currentChat.user1.name和currentChat.user2.name（请参阅中的<h2>元素ChatRoom），则会出现错误

TypeError: Cannot read property 'name' of undefined