bugfix

src/components/supervisory/Index.vue

@@ -455,6 +455,8 @@ export default {
                 singlePlayer.play();
                 this.cameraList[nullIndex].player = singlePlayer;
               });
+            } else {
+              this.cameraList.splice(nullIndex, 1);
             }
           });
         } else {
@@ -520,11 +522,14 @@ export default {
       this.cameraList = [];
     },
     closeSingle(index) {
-      this.cameraList[index].player.dispose();
-      this.cameraList[index].player = null;
-      this.cameraList[index].live_address_url = "";
-      this.cameraList[index].id = "";
-      this.$forceUpdate();
+      if (this.cameraList[index]) {
+        this.cameraList[index].player &&
+          this.cameraList[index].player.dispose();
+        this.cameraList[index].player = null;
+        this.cameraList[index].live_address_url = "";
+        this.cameraList[index].id = "";
+        this.$forceUpdate();
+      }
     },
     viewAll() {
       this.cameraList.map((item) => {