The best place to report this issue is the Public Issue Tracker, where you can be sure your posting will get deserved attention, and developments or solutions are all on thread.
Your Cloud SDK seems to be up-to-date. Running gcloud components update may be still be worthwhile. We need the full --verbosity output: gcloud app deploy --verbosity=debug --no-user-output-enabled. Does this error happen each time you attempt deployment? Has deployment ever succeeded for your image. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/98160a90-c1c5-4b13-bdfd-666b5bbcd729%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.