Changing the custom lists in Profile Stats is ending up with server error.
Internal server error (6a7c7cbb228b95.64656846)
Internal server error (6a7c7ee9ce2269.22255894)
I set up two lists in past. One from GC codes in Hides and one from a bookmark in Milestones. Even then it was problematic, but after various attempts it worked. Now I'm trying to add one cache to the GC codes list, I don't change anything else and it doesn't work. Even if I change the list to bookmark-based.
I found a similar issue from February, which has not been closed.