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Crash Report of the mod crashing on servers!

fixed. Will release an update soon

Will look into this soon

Encountered a similar issue. The server crashes during startup due to Sully's Mod (sullysmod-3.2.0-beta) attempting to load a client-side class (HumanoidModel) on the server. This occurs in the initialization phase and results in an IllegalStateException caused by RuntimeDistCleaner detecting an invalid environment (DEDICATED_SERVER).

java.lang.IllegalStateException: Attempted to load class net.minecraft.client.model.HumanoidModel for invalid dist DEDICATED_SERVER
  at net.minecraftforge.fml.loading.RuntimeDistCleaner.processClassWithFlags(RuntimeDistCleaner.java:71)
  at net.minecraftforge.fml.loading.RuntimeDistCleaner.transform(RuntimeDistCleaner.java:44)
  ...

that's the same issue ye!