Hello!
It seems that in a patch to paper that merges upstream to craftbukkit, a constructor for CraftShulkerBox was removed. This is incredibly strange for a mid-version patch, but it is what it is.

This update intends to patch this issue by replacing the constructor with new block state methods. The version is being kept the same due to no new features being introduced.

Please let me know if you have any issues with this version! The CraftShulkerBox constructor was mostly used when converting old elevators upon breaking, so that is the area I would expect possible issues, if any. I am hopeful there aren't.