here is the crash
crash-2022-04-03_14.00.33-server.txt

I am having a similar issue that also seems to be effecting other structure mods.
crash-2022-04-30_13.21.52-server.txt

I removed yung's api and all associated mods and it still crashed, so i don't believe this is necessarily the cause

It's impossible to tell from these logs alone, but this often happens because structure mods offer settings for a minY and maxY. If you set the minY to be greater than the maxY (which makes no sense), this crash is commonly the result. Double check all your mod configs.