Google App Engine-“请改用https://accounts.google.com/ServiceLogin。”错误

Question

I am getting a weird error in my Google App Engine Go app. When I prompt the user to log in, they are redirected to a login screen for Google. After logging in, they get a message

Please use https://accounts.google.com/ServiceLogin instead.

I haven't touched my app's code in a few months and it wasn't an issue before. My login code is basically what one can see in the official documentation. I can easily recreate this error in both Chrome and Firefox and on multiple accounts.

The app can be viewed here (NSFW-ish), login button is on every page.

Answer 1

I think this can be a bug on our side. I'd recommend you file a bug report on our issue tracker, hopefully with some more details like the URL where you see that message, app-id, etc.