I use the most recent version of AE2 and it is on a server i co run, but everytime I go, or anyone else, uses the Network tool, i.e. right click a cable or other ME block, it causes the server to crash.

To Reproduce
Use a Network Tool on a network with an auto-craft setup.
Expected behavior
Server will crash.

Additional context
https://pastebin.com/bAJT5cQe
Environment

• Minecraft Version: 1.12.2
• AE2 Version: appliedenergistics2-rv6-stable-6
• Forge Version: 14.23.5.2808

This is most likely caused by some AE2 addon missing a representation when being displayed in the network status.

Currently I cannot say which one it might be. Best approach for now would probably be to make a backup of the save and remove one AE2 addon, start minecraft, and repeat that until the crash stopped. Then report it to whatever addon was removed last.

Otherwise I will look into adding some logging for it in the next release. Technically I could skip it, but resolving it correctly would be better.

Spoiler alert

Probably the same crash:
https://gist.githubusercontent.com/purpleposeidon/c42f16d22c8c5146c215ba73fdf5dce8/raw/74bce155aef1aa539150a6911e1498d29e0b65e3/gistfile1.txt