Correct login info suddenly doesn't match, can't login

[gajang]

Definitely correct as its cached in browser. Hosted locally with Docker Container, everything up to date, no changes made between the last time it worked & now, where it only returns "Your username and password didn't match. Please try again."

I'm not very experienced with any aspect of Docker & SQL so I don't know what more information is relevant to find a fix, but my setup followed the steps as described, and it was fully working for the last month since creation.