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public/react/src/modules/courses/signin/student/Signindetails.js

@@ -2,6 +2,8 @@ import React,{ Component } from "react";
 import '../css/signincdi.css';
 import Detailss from '../component/Detailss';
 import Signedinlist from './Signedinlist'
+import axios from 'axios';
+
 //在线学习
 class Signindetails extends Component{
 	constructor(props){