check if chatProvider is ready when sending event message

src/core/event.js

@@ -156,6 +156,7 @@ class Event {
   }
 
   static broadcastChatMessage(message) {
+    if (chatProvier.enChannelId && chatProvider.eventUserId) {
       chatProvider.broadcastChatMessage(
         EVENT_USER_NAME,
         message,
@@ -163,6 +164,7 @@ class Event {
         chatProvider.eventUserId,
       );
     }
+  }
 
   async runEventLoop() {
     const {