Game Version: 1.14.4-forge-28.2.3
Mod Version: create-mc1.14.4_v0.2.1
The shutdown of the game happened after putting a single-chest near a funnel on a conveyor belt and dropping some items on the belt itself. I would like to add that the world, when loggin back in, is totally normal and that the problem appens only when the item filter of the funnel is empty or when the item that was going trought was different from the filter itself.
Here is the report and some screenshots representing the setup; hope you find this useful.

Screenshots:

Report:
crash-2020-03-23_13.50.52-server.txt

This issue has been addressed in 0.2.2a. Thanks for the report and feel free to re-open if need be.