send offline message

src/app/app.module.ts

@@ -97,6 +97,7 @@ import { DiplomaOptionsPage } from './shared/popover/deploma-options/deploma-opt
 import { ImageCropperModule } from 'ngx-image-cropper';
 import { createAction, createReducer, on, StoreModule } from '@ngrx/store';
 import { typingReducer } from './module/chat/data/data-source/userTyping/user-typing-memory-data-source.service';
+import { ChatModule } from './module/chat/chat.module';
 // import { ServiceWorkerModule } from '@angular/service-worker';
 // import { AngularFireModule } from '@angular/fire';
 // import { AngularFireMessagingModule } from '@angular/fire/messaging';
@@ -210,7 +211,9 @@ export function counterReducer(state, action) {
     // options
     DeplomaOptionsPageModule,
     CreateProcessPageModule,
-    ImageCropperModule
+    ImageCropperModule,
+    // module
+    ChatModule
   ],
   entryComponents: [
     DiplomaOptionsPage,