Await promise

app/assets/app/service/Message.service.js

@@ -27,7 +27,7 @@ class MessageService {
             this.listener = setInterval(() => this._listener_tick(), this.listener_interval)
             window.addEventListener('beforeunload', () => this.stop_listener())
             try {
-                this._listener_tick()
+                await this._listener_tick()
             } catch (e) {
                 this.stop_listener()
             }