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Issue description:

Can't connect to a server with Mekanism. Client receive the message:
Connection Lost
incomplete set of tags received from server.
Please contact server operator.

Steps to reproduce:

1. Install a fresh Forge server
2. Add Mekanism mods
3. Client can't connect anymore on the server

Version (make sure you are on the latest version before reporting):

Forge: forge-1.16.5-36.0.22
Mekanism: Mekanism-1.16.5-10.0.20.447, MekanismTools-1.16.5-10.0.20.447, MekanismGenerators-1.16.5-10.0.20.447, MekanismAdditions-1.16.5-10.0.20.447
Other relevant version:

If a (crash)log is relevant for this issue, link it here: (It's almost always relevant)

https://gist.github.com/Cabu/886ba2d2af03efbf01d6ce1043a15a3f

Do you have mekanism installed on the server...?

And please send logs wia https://gist.github.com or pastebin

Hi, To be sure I added Biomes O' Plenty on my server. With only this one, that work fine. But as soon as i add Mekansim I got the error...

Please provide both the full server log.

If this is your full Server log, you did not installed forge or something else. This is just Vanilla.

Ok. Sorry for the trouble. I seen now that my systemd startup script didn't start the correct JAR :( It work now. Once again. sorry for the inconvenience :(