several improvements

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

@@ -1,4 +1,4 @@
-import { NgModule } from '@angular/core';
+import { NgModule, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
 import { CommonModule } from '@angular/common';
 import { FormsModule } from '@angular/forms';
 
@@ -12,15 +12,21 @@ import { SharedModule } from 'src/app/shared/shared.module';
 import { ChatPopoverPageModule } from '../../popover/chat-popover/chat-popover.module';
 import { NewEventPageModule } from '../../agenda/new-event/new-event.module';
 
+import { PdfViewerModule } from 'ng2-pdf-viewer';
+
 @NgModule({
   imports: [
     CommonModule,
     FormsModule,
     IonicModule,
+    PdfViewerModule,
     ChatPopoverPageModule,
     GroupMessagesPageRoutingModule,
+
+
   ],
   exports: [GroupMessagesPage],
+  schemas: [CUSTOM_ELEMENTS_SCHEMA],
   declarations: [GroupMessagesPage]
 })
 export class GroupMessagesPageModule {}