I have got the gist but getting below error when deploying app version 1. I tried redeploying the app and this time got different error.
First time error – "ERROR: (gcloud.app.deploy) NOT_FOUND: Unable to retrieve P4SA: [firstname.lastname@example.org] from GAIA. Could be GAIA propagation delay or request from deleted apps.;"
Second time error – "ERROR: (gcloud.app.deploy) Error Response:  Cloud build 7186246f-7205-4168-9667-b366b98458bb status: FAILURE Build error details: Access to bucket staging.managing-ver-62-d70f139f.appspot.com denied. You must grant Storage Object Viewer permission to email@example.com."
Any suggestion on this?