update

src/views/live/teacher/index.vue

@@ -293,6 +293,7 @@ export default {
     //   clearInterval(i);
     // }
     clearInterval(this.timer);
+    common.closeVideo('main');
   },
   methods: {
     initSDK() {

src/views/live/teacher/live.js

@@ -11,7 +11,8 @@ export {
   getDevice,
   publishStream,
   handsDown,
-  sendPublishMessage
+  sendPublishMessage,
+  closeVideo
 } from '@/views/live/common';
 
 /**