This type does not have a value, so it cannot be used as injection token

[tesshsu]

I tried to integrate with the plugin follow by doc
I declare as follow

constructor ( private authService: SocialAuthService )
async loginGoogle() {
  let googleUser = this.authService.signIn(GoogleLoginProvider.PROVIDER_ID);
}

Thne I got
private authService: SocialAuthService
~~~~~~~~~~~~~~~~~
This type does not have a value, so it cannot be used as injection token.

Any ideal how to reslove this issue ?

[mfrizqi]

As written in here [sign in with google](https://github.com/abacritt/angularx-social-login#sign-in-with-google
you dont need to write signIn for google as the method has replaced by asl button

and also can you add line where you add imports from SocialAuthService?