Great to have someone in here who pays for support! 

I re-published a cloud function that uses it and it worked for 2 days after republishing, then got this error this morning. Hopefully it's discovered and resolved quickly, it's not mentioned on their service health page yet.https://status.cloud.googl...

I've been using the project Number* for the last 6 months with no issues, but today the issue appeared for the first time.

I am having the same issue on the Sydney server.