500 error when editing wiki

For the past day or two I've been editing my wiki a lot, and about 50% of the time when I try to edit or create a page I get a 500 error. This includes clicking the "Edit" button to begin editing as well as clicking "Save" to save my changes. Usually when I get the error while saving, my changes are still saved, so the error doesn't make much sense.

This is more of a nuisance since I can just hit "Back" and try again, and it will usually work.