RE: https://codelabs.developers.google.com/codelabs/flutter-firebase/#6

For this step to succeed you have to enable debug mode. Towards this, the codelab links to https://support.google.com/firebase/answer/7201382?hl=en&utm_id=ad. However, this has no details for how to accomplish the task, and we really struggled in xCode. Can we please add details for how to complete this step?

This bug was found during a "dryrun" of the Firebase codelab in AAR by @floitschG, @mravn-google, and @mit-mit.