Brewery causes console spam while loading data

and also randomly if players are on server

This seems to be a Bug from Minecraft:
https://bugs.mojang.com/browse/MC-152265

This may be triggered by some items in Barrels, but i really don't know.

You can safely ignore this, but if you want to delete all Items from all Barrels, stop your server and delete the worlddata.yml from the Brewery folder.

Ok, thanks!