https://github.com/fzzyhmstrs/gearifiers

Seems to be conflicting with this mod.

Error message occurs when the items used to craft the agglomeration have modifiers. They carry over to the crafted item causing infinite health drain and other weird bugs.

In order to even get started debugging this, we need a latest.log file from a run of the game where you got kicked from the server with the message you showed - otherwise we simply do not have enough information to figure out why this is happening