Object did not get ID it asked for. (1.18.2)

[VoidCallerZ2]

Keep getting this error whilst trying to join my existing world and also when trying to create a new world.

I have updated my 1.19.2 mod recently with a lot of new additions and I've implemented most of those changes to 1.18 now as well. Data generation works fine but when trying to open a world it just crashes.

Ultimate Compression 1.18.2 Code

This is the full error log I'm getting:

https://pastebin.com/TUWx7UR2

I'd like to know what I'm doing wrong because I really can't seem to figure it out.

Edited October 2, 2022 by VoidCallerZ2

[ChampionAsh5357]

Your log has expired, so please reupload it.

[VoidCallerZ2]

Got a new one here, via gist this time: https://gist.github.com/VoidCallerZ/96a7f026f88543ddace1c11fd7fb15c5

[warjort]

Quote

Caused by: java.lang.NullPointerException

at java.util.Objects.requireNonNull(Objects.java:208) ~[?:?] {}

at java.util.ImmutableCollections.listFromArray(ImmutableCollections.java:190) ~[?:?] {}

at java.util.List.of(List.java:1047) ~[?:?] {re:mixin}

at java.util.ImmutableCollections.listCopy(ImmutableCollections.java:172) ~[?:?] {}

at java.util.List.copyOf(List.java:1068) ~[?:?] {re:mixin}

at net.minecraft.core.HolderSet.direct(HolderSet.java:38) ~[forge-1.18.2-40.1.80_mapped_parchment_2022.09.04-1.18.2-recomp.jar%2379!/:?] {re:classloading}

at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197) ~[?:?] {}

at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1625) ~[?:?] {}

at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) ~[?:?] {}

at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) ~[?:?] {}

at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:921) ~[?:?] {}

at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:?] {}

at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:682) ~[?:?] {}

at net.minecraft.world.level.biome.BiomeGenerationSettings$Builder.build(BiomeGenerationSettings.java:111) ~[forge-1.18.2-40.1.80_mapped_parchment_2022.09.04-1.18.2-recomp.jar%2379!/:?] {re:classloading,pl:accesstransformer:B}

You are not registering your worldgen properly.

See: https://forums.minecraftforge.net/topic/115928-1182-error-trying-to-register-a-custom-feature-based-on-kelpfeature-solved/?do=findComment&comment=512366