Question: I'm trying to create a simple menu to show when clicking on a button, but I'm not able to get `matMenuTriggerFor` to work. You can see the whole project at <https://github.com/yperess/risc16> (it's basically just a stub).

The main issue is the toolbar component:

```
<button mat-button [matMenuTriggerFor]="fileMenu">File</button>
<mat-menu #fileMenu="matMenu">
  <button mat-menu-item>Hello</button>
</mat-menu>

```

Here, clicking on the File button doesn't open the menu.

Answer: 
When you click the 'File' button you get the following error in the console:

> 
> ERROR Error: Found the synthetic listener @transformMenu.start. Please
> include either "BrowserAnimationsModule" or "NoopAnimationsModule" in
> your application.
> 
> 
> 

Simply add one of these modules to your imports and your menu will work correctly.

<https://stackblitz.com/edit/github-xtpwhw?file=src/app/app.module.ts>
```
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';

```

please import above animation package in `app.module.ts` file , it will work nicely