Do you use Java 8?
[Yes]

What version of Minecraft do you use?
[1.12]

What version of MinecraftForge do you use?
[14.23.3.2673]

What version of Immersive Engineering do you use?
[0.12-82]

What version of Immersive Cables do you use?
[1.12.2-1.3.0]

What is the issue / bug you have encountered? Give us a short description.
[I broke a fluix transformer on an active ME network, making the server force close]

How can it be reproduced?
[See above]

Please post your log file (either in /logs/fml-client-latest.log or /logs/latest.log) on https://gist.github.com and provide the link:
[https://pastebin.com/Mc0igfMx]

I play on Enigmatica 2 Expert modpack v1.23, with immersive cables added. The crash happened on my dedicated server.