fix

src/app/shared/chat/messages/messages.module.ts

@@ -11,6 +11,7 @@ import { SharedModule } from 'src/app/shared/shared.module';
 import { FontAwesomeModule } from '@fortawesome/angular-fontawesome';
 import { MatButtonModule } from '@angular/material/button';
 import {MatMenuModule} from '@angular/material/menu';
+import { LettersAvatarModule } from "ngx-letters-avatar";
 
 @NgModule({
   imports: [
@@ -20,7 +21,8 @@ import {MatMenuModule} from '@angular/material/menu';
     FontAwesomeModule,
     MessagesPageRoutingModule,
     MatButtonModule,
-    MatMenuModule
+    MatMenuModule,
+    LettersAvatarModule
 
   ],
   exports: [MessagesPage],