Modpack version
1.81a

Issue
Destroying an Advanced Generator block with Mekanism's Laser crashes the game as long as the entity exists. Tested with Advanced Alloy Turbine on multiblock and a lone Gas Turbine Generator, both crashed. (removing the block drops an world editor stops the crashing)

Logs
https://pastebin.com/dcfgvFfa

I'm afraid this will never get fixed, as Mekanism no longer supports 1.12 unless the issue is extremely critical, and Advanced Generators hasn't been worked on in over 2 years :(