GregTech CEu Version

1.0.16

Recipe Viewer Installed

None

Environment

Singleplayer and Multiplayer

Cross-Mod Interaction

Yes

Expected Behavior

Not crash

Actual Behavior

Crash

Steps to Reproduce

Attach cover to pipe
Use wrench to disconnect side of pipe with cover

Additional Information

Looks like it deletes the connection before removing the cover, so the cover tries to reference a null object
crash-2023-12-08_20.46.16-server.txt

Just encountered this crash too. It also seemed to put the pipe block in an invalid state, so reopening the world caused the crash to happen again.