If you type in the 2FA code (authenticator) and "quickly" hit Enter, you will end up with an error page.
It "auto-submits" after the last digit, so it seems like hitting Enter while it's already processing/loading, causes the issue.
Naturally, simply refresh, type in your password again, take it slowly and let it submit by itself, you are good to go.
Dennis moved item to board In progress1 month ago
Fred moved item to project Bugs2 months ago
Fred created the item2 months ago