Ticking Entity Crash

Hey everyone, I was hoping you could help me with this problem. Wither skeleton in TheOther is crashing my server and I can't login to it without immediately crashing the server. I can just restart the server through a backup, but I was hoping you all might have found an easier way to get around these issues?

I've seen lots of posts through searching, and it seems it happens randomly for no exact reasons. But I want to find a way to delete the entity easily to prevent the crash from occurring. Does anyone know if the kill command works on exact entity data I can find through the error log? Or something like that?