It seems that the
" import mods.cagedmobs.CTAdditionalLoot;
val additionalLoots = recipetype:cagedmobs:additional_loot_data;"
is invalid. I am using all three (entity, environment, loot) the only one not working is loot. It says so in the chat when I reload

Oh, I forgot to update the wiki. I changed it to "AdditionalLoot" only.
Try: "import mods.cagedmobs.AdditionalLoot;"