BetterExceptions detects an error in 'Elements'?

Hey guys,

I got an orange lastexception error message from MCCC. (I couldn't find sth is not working during playing.)

When I tried 50/50 with my mods, all of them worked well when I put them seperately.

I tried Better Exceptions, and it says:

There is bad tuning in this mod: elements
Delete it from your mods folder or see if the author has an updated version.
If it is a multi-package mod make sure you update all of them.

Reason: Exception in Sim Timeline: Exception running Element (AttributeError: 'NoneType' object has no attribute 'state')

Can somebody plz help me fix this? I guess Wicked is the reason, but the report doesn't suggest any specific file. What is 'elements'?