Basically, this line of code:

You should always name LootPools you inject by calling LootPool.Builder#name(String). Set it to whatever, just make sure that whatever is not null. Otherwise you will cause an error state if any other mod attempts to inject to the same table, which in turn leads to no loot being generated from affected loot table.

For reference and some more info, you can take a look at this: Aizistral-Studios/Enigmatic-Legacy#132

Yup, please fix, getting this issue with the current versions.

Thanks for the tip. Fixed in 2.1.1

Great.