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I recently updated a bunch of mod in a personal mod pack.  Before updating everything worked fine but now.  I crash every time with a weird error


java.lang.IllegalArgumentException: value already present: net.minecraftforge.fluids.Fluid@3c79ad2e


I've uninstalled and re-installed the latest 3 or 4 multiple times over and cant seem to get it to work.  I haven't found anything on wither bit of the error.


Here my log



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java.lang.IllegalArgumentException: value already present: net.minecraftforge.fluids.Fluid@276863c1

at com.google.common.collect.HashBiMap.put(HashBiMap.java:238)

at com.google.common.collect.HashBiMap.put(HashBiMap.java:215)

at net.minecraftforge.fluids.FluidRegistry.registerFluid(FluidRegistry.java:136)

at com.sirolf2009.necromancy.core.proxy.ClientProxy.init(ClientProxy.java:84)

at com.sirolf2009.necromancy.Necromancy.init(Necromancy.java:124)

I do Forge for free, however the servers to run it arn't free, so anything is appreciated.
Consider supporting the team on Patreon

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