Unable to Save Wantlist Filter

I tried the save Bookmark feature in wishlist and got an error.

This is the URL for the list:
https://deckbox.org/sets/1462937?f=c371 … 7RhOyJ1JEw

When you go to save it you get the naming modal window.

When you hit save it boots you to home with the error:

Server Error. Cannot display page.