我试图让一个简单的react-redux应用程序工作，我遇到了一个奇怪的错误，我不能弄清楚。我试图简单地设置我的当前用户的名字和处理商店和一个设置功能的工作，另一个不工作。
设置当前用户名字-工作设置当前用户句柄-不工作

import React, { Component } from 'react';
import { Link } from 'react-router';
import { connect } from 'react-redux';
import store from '../../store';
var Utilities = require('../../../common/commonutilities.js');
var RestClient = require('../../../common/restClient.js');

//actions
import { setCurrentUserHandle, setCurrentUserFirstName } from '../../actions/userActions';

class Header extends Component {
  constructor(props) {
    super(props);

    this.state = {};

    RestClient.api.fetchGet('/getcurrentuser', (response) => {
      if(response.success) {
        this.setState({
          isAuthenticated: true,
          currentUser: response.currentUser
        });

        store.dispatch({
          type: 'USER_DID_LOGIN',
          userLoggedIn: true
        });

        //works fine
        this.props.setCurrentUserFirstName(response.currentUser.firstName);      

        //doesn't work and throws the error: "TypeError: _this.props.setCurrentUserHandle is not a function"
        this.props.setCurrentUserHandle(response.currentUser.handle);

      }
    },
    (err) => {
      console.log(err);
    });
  }

  render() {
    return (
      

        {this.props.user.currentUserFirstName}, {this.props.user.currentUserHandle}

      

    );
  }

}

const mapStateToProps = function(store) {
  return {

         //user properties
         user: store.userState
  };
};

const mapDispatchToProps = (dispatch) => {

      return{
        setCurrentUserFirstName: (currentUserFirstName) =>{
          dispatch(  setCurrentUserFirstName(currentUserFirstName));
        }
      }

      return{
        setCurrentUserHandle: (currentUserHandle) =>{
          dispatch(  setCurrentUserHandle(currentUserHandle));
        }
      }     

};

//connect it all
export default connect(mapStateToProps, mapDispatchToProps)(Header);

我将它们作为操作保存在userActions.js文件中

export function  setCurrentUserFirstName(currentUserFirstName){
    return{
            type:  'SET_CURRENT_USER_FIRST_NAME',
            payload: currentUserFirstName
    };      
}

export function  setCurrentUserHandle(currentUserHandle){
    return{
            type: 'SET_CURRENT_USER_HANDLE',
            payload: currentUserHandle
    };      
}

并在减速机

const initialUserState = {
  user: {}, 
  currentUserFirstName:[],
  currentUserHandle:[]
};

// The User reducer
const userReducer = (state = initialUserState, action) => {

  //using newState object to be immutable
        let newState = state;

        switch (action.type) {

          case 'SET_CURRENT_USER_FIRST_NAME':
                newState = {
                  ...state,   
                  currentUserFirstName:  action.payload 
            };
            break;

          case 'SET_CURRENT_USER_HANDLE':
                newState = {
                  ...state,   
                  currentUserHandle:  action.payload
            };
            break;

            break;

          default:
        break;
  }

  return newState;
};

export default userReducer;

我有什么不对的？