add error message

src/app/app.component.ts

@@ -4,7 +4,6 @@ import { Platform } from '@ionic/angular';
 import { StatusBar } from '@ionic-native/status-bar/ngx';
 import { NgxMatDateFormats } from '@angular-material-components/datetime-picker';
 import { NGX_MAT_DATE_FORMATS } from '@angular-material-components/datetime-picker';
-import { ChatSystemService } from 'src/app/services/chat/chat-system.service';
 import  { InativityService } from "src/app/services/inativity.service";
 import { ThemeService } from 'src/app/services/theme.service';
 import { environment } from 'src/environments/environment';
@@ -41,7 +40,6 @@ export class AppComponent {
       private statusBar: StatusBar,
       public ThemeService: ThemeService,
       private storage: Storage,
-      private ChatSystemService: ChatSystemService,
       private sanitizer: DomSanitizer,
       private screenOrientation: ScreenOrientation
   ) {
@@ -49,7 +47,6 @@ export class AppComponent {
     window["sanitizer"] = this.sanitizer
     this.initializeApp();
     this.storage.set('version', environment.version).then(() => {})
-    ChatController.ChatSystemService = this.ChatSystemService
 
   }