Can't seem to get this to load on my forge 1.20.1 server. It crashes on start up.

Caused by: org.spongepowered.asm.mixin.throwables.MixinApplyError: Mixin [boatload.mixins.json:BoatMixin from mod (unknown)] from phase [DEFAULT] in config [boatload.mixins.json] FAILED during APPLY at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinProcessor.handleMixinError(MixinProcessor.java:638) at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinProcessor.handleMixinApplyError(MixinProcessor.java:589) at MC-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:379) ... 33 more Caused by: org.spongepowered.asm.mixin.transformer.throwables.InvalidMixinException: Unexpecteded ClassMetadataNotFoundException whilst transforming the mixin class: [MAIN Applicator Phase -> boatload.mixins.json:BoatMixin from mod (unknown) -> Apply Methods -> ()Lnet/minecraft/world/item/ItemStack;:getBanner -> Transform Instructions -> CHECKCAST com/teamabnormals/blueprint/common/world/storage/tracking/IDataManager -> desc=com/teamabnormals/blueprint/common/world/storage/tracking/IDataManager]