Pixelmon Entity Crash!

I keep getting this Entity error in console every now and then and it doesn’t 100% of the time crash the server but a lot of the times it does any ideas?

Crash-Report: http://pastebin.com/QqA1gqg7

This guy seemed to have a similar if not same problem ( Pixelmon Saving Entity NBT server crash )

What have you added last? This seems an issue with one of your plugins corrupting an entity. Try finding the actual entity it refers to and removing it.

I don’t know what plugin it would be because it just started a while ago but there hasn’t been any new plugings for a long time like weeks. And i have been trying to find the entity it’s referring to but i can’t seem to, That’s why i was hoping someone here could help