[Bug] Misused Login URI Triggers Faults <FastAPI>

You can get server issues on or after login if you abuse the URI.

Never Redirecting:

1): Login Normally (https://aur-dev.archlinux.org/login?next=/) 2): Return to a Login URI (https://aur-dev.archlinux.org/login?next=/)

The result is a claim that the page isn’t redirecting properly.

Internal Server Error:

1): Navigate to Doctored URI (https://aur-dev.archlinux.org/login?next=/logout) 2): Login Normally

The result is sometimes an internal server error page.