Authentication Error on login but still logged in

When I log in, it tells me I have an authentication error, but if I go back, it takes me to the login page, while also having me logged in. I can log in and access, so far as I can tell, everything I should be able to.

This happens consistently, on mobile (android, chrome browser). Does not appear on computer or alternative mobile browsers.

This error message appears when you or your browser submits the login form twice. The first submission successfully logs you in, and because you are now logged in, the anti-forgery token included in the second submission is rejected.

I’m not sure if this is happening all the time for you or just sometimes, but if it’s frequent, I would suggest ensuring that your OS / Browser are up to date, and check whether you have any extensions that might be causing this behavior.

I have the same issue when logging in with Edge.