After adding this mod to the 1.21.1 server, the server fails to start.

[MC-Nirvana]

Checked for existing issues

• I have checked for existing issues, and have found none.

Tested latest version

• I have checked that this occurs on the latest version.

GregTech CEu Version

1.21.1-7.0.2

Minecraft Version

1.21.1 NeoForge

Recipe Viewer Installed

None

Environment

Multiplayer - Dedicated Server

Cross-Mod Interaction

Yes

Other Installed Mods

 Mod List:
	Name Version (Mod Id)

	Configuration 3.1.0 (configuration)
	EUP2P 1.21.1-1.0.0 (eup2p)
	GregTech 7.0.2 (gtceu)
	LowDragLib 1.0.35.a (ldlib)
	Minecraft 1.21.1 (minecraft)
	NeoForge 21.1.217 (neoforge)
	SpongeNeo 1.21.1-21.1.211-12.0.3-RC2486 (spongeneo)

Expected Behavior

Start the server normally.

Actual Behavior

Server crash, error log pop-up

Steps to Reproduce

1. Download the JAR file and mount it
2. Start the server

Additional Information

Crash log: https://mclo.gs/FZtLfro
Server latest log: https://mclo.gs/rSO30tJ

Based on log analysis, it appears that the crash was caused by invoking a class that should only be available in the client.