A step by step guide for Facebook login

Hi, is there a tutorial/guide that explain exactly what to do to enable Facebook Login?
Because the guide https://ionicframework.com/docs/native/facebook doesn’t work at all: you end up with an error saying:
“GraphResponse: {HttpStatus: 400, errorCode: 100, subErrorCode: 33, errorType: GraphMethodException, errorMessage: Unsupported get request. Object with ID ‘xyz’ does not exist, cannot be loaded due to missing permissions, or does not support this operation. Please read the Graph API documentation at https://developers.facebook.com/docs/graph-api}”

It would be great having something that works “for real”

Regards
R

Found a working tutorial here: https://medium.com/enappd/facebook-login-in-capacitor-apps-with-ionic-angular-73487a680254