chrisonline Any official doc for Twitter Login available?
We really need to have documentation per extension. I also think it's a bug that the route isn't found when the scope (for email) is missing, I'm not sure we can fix that on our end, but if we can that would help solve a lot of these error reports.
@chrisonline feel free to create an issue for this, make sure to link back and explain that we need to identify whether we can improve this error handling.