If you’re getting a 500 error when trying to edit a character, we know about the issue and are working on it. It’s a subtle bug and we need to be careful about fixing it to make sure we don’t lose data.
We’ll be working on this on October 7, and hope to have a fix for it by the afternoon, or perhaps sometime on October 8. Until then, our apologies and we hope you can live without a character or two for a day.