Step 3 - file with app.component.spec.ts TutorialHeaderModule

[LoveraSantiago]

I was having a lot of problems with step 3. And I restarted this step again.

On the beginning of fetch upstream step 3 it brings app.component.spect.ts file with:

"import { TutorialHeaderModule } from './tutorial-header/tutorial-header.module';"

when I run npm test it logs with "ERROR in app/app.component.spec.ts:5:38 - error TS2307: Cannot find module './tutorial-header/tutorial-header.module'."