fix

src/app/pages/agenda/new-event/new-event.module.ts

@@ -23,6 +23,7 @@ import { ReactiveFormsModule } from '@angular/forms';
 import { MatButtonModule } from '@angular/material/button';
 import { MatSelectModule } from '@angular/material/select';
 import { NgxMatMomentModule } from '@angular-material-components/moment-adapter';
+import { MatDialogModule } from '@angular/material/dialog';
 
 @NgModule({
   imports: [
@@ -30,6 +31,7 @@ import { NgxMatMomentModule } from '@angular-material-components/moment-adapter'
     FormsModule,
     IonicModule,
     NewEventPageRoutingModule,
+    //
     MatDatepickerModule,
     MatInputModule,
     MatNativeDateModule,
@@ -39,7 +41,8 @@ import { NgxMatMomentModule } from '@angular-material-components/moment-adapter'
     NgxMatMomentModule,
     MatSelectModule,
     MatButtonModule,
-    ReactiveFormsModule
+    ReactiveFormsModule,
+    MatDialogModule,
   ],
   declarations: [NewEventPage]
 })