I am getting the above error only on the line await this.router.navigateByUrl('dashboard'); The previous line gives the error: Error: Uncaught (in promise): TypeError: You provided 'undefined' where a stream was expected. You can provide an Observable, Promise, Array, or Iterable. What is causing this error to throw? Due to this, the page is not redirected to home. Please help. I am using angular 7.