Issue description:

Server has crashed daily (at night usually, when nobody is online/playing).
Crash logs tell me it has to do with the builder in some way.
My case is that I have an RFtools lava dimension (i know that issues regarding this should be in a different issue tracker, but my issue is not with dimensions) in which there is a builder with a pump card using a lava whitelist filter.
The pump is chunkloaded using the FTB chunkload mechanic and is connected to an ender tank and a Flux Point.

I play on the FTB Revelations modpack version 3.3.0 and have added RFTools dimensions (1.12-5.71) to it myself.
Everything else about the pack is stock.
There is an update for the pack but the changelog mentions no changes related to my issue.
FTB-Revelations_3.4.0_changelog.txt

Steps to reproduce:
Place builder in lava RFTools dimension?

Versions:

• Minecraft: 1.12.2
• Forge: 1.12.2-14.23.5.2846
• CompatLayer (only if on Minecraft 1.10 or 1.11):
• McJtyLib: 1.2-3.5.4
• RFTools: 1.12-7.72

Possibly incompatible mods and versions:

Relevant logs, if any:
crash-2020-12-13_06.06.16-server.txt
crash-2020-12-12_11.50.55-server.txt

That's weird. It's not really crashing inside the builder itself so I don't have a clue what's going on. Nobody ever reported something like this to me

@SNENSER version and crashlog?

Hey I have a similar problem. I am using the builder for the first time and it worked somehow. But when I now try to pick it up, so "mining" it with my pickaxe the hole server crashes. I immediately am unable to do anything and after a few seconds the server kicks me out.

Im playing in 1.12 in the new Infinity reloaded pack by SanderW. i dont really have a crash log because the server isnt really crashing. It just stops working and I cant do any action except moving around. Then Im timing out and cant reconnect. I have to restart the server manually to get it working again. I just tried it again and it "crashed" even when I placed a builder in a custom dimension. The chunks are unclaimed. I guess I will have to look around for a different option to mine my Blocks for Avaritia Infinity Catalysts.