Hi! This mod seems really cool, unfortunately when I threw an iron spear the server crashed, when I restarted it and tried to reconnect it crashed the server again. Attached crash reports:
crash-2020-09-12_16.33.05-server.txt

crash-2020-09-12_16.30.34-server.txt

You're trying to use a 1.16.2 version of our mod on a 1.16.1 fabric api, this might be the issue. You could try downgrading to 1.3.1 and see if that works