Server crashed when I go in Nether

Sponge Sponge Support
1

Crash report and info here.

What happen?

2

Looks like a SpongeForge - Forge version mismatch.

UCHIJAAAA FML{8.0.99.99} [Forge Mod Loader] (forge-1.11.2-13.20.0.2282-universal.jar)
UCHIJAAAA forge{13.20.0.2282} [Minecraft Forge] (forge-1.11.2-13.20.0.2282-universal.jar)
UCHIJAAAA spongeapi{6.0.0-SNAPSHOT-ea252b1} [SpongeAPI] (spongeforge-1.11.2-2227-6.0.0-BETA-2275.jar)
UCHIJAAAA sponge{1.11.2-2227-6.0.0-BETA-2275} [SpongeForge] (spongeforge-1.11.2-2227-6.0.0-BETA-2275.jar)

3

If Forge version much, then I can’t login for error. this is already reported.