Error: This may be due to network connectivity issues. Please check your network settings, and the status of the service you are trying to reach.

[sourav-paul]

I may have been missing some permission but can't pinpoint. Cloud Build, Cloud Run, App Engine and all related APIs are enabled in the console.

I get this error both with Cloud Run and App Engine when trying to upload ASP.NET Core 3.1 app. I could upload and run with similar Dockerfile config to Cloud Run.

Got nowhere trying for WEEKS and internet search.