bugfix

src/app/views/realtime-broadcast/realtime-broadcast.component.ts

@@ -19,7 +19,7 @@ export class RealtimeBroadcastComponent implements OnInit,AfterViewInit {
   constructor(
     private fb: FormBuilder,
     private mainService: MainService,
-    private tool: ToolService,
+    public tool: ToolService,
     private message: NzMessageService,
     public router: Router,
   ){}