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1.17.1 forge error code -1 help


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    • show the complete RegistryObject, you tried to create
    • Luis_ST Can you please show me an example I am trying to create a ForgeSpawnEggItem in my ModSpawnEgg class, but it keeps on saying the same error as shown above 
    • Time: 12/3/21 11:33 PM Description: Ticking entity java.lang.BootstrapMethodError: java.lang.LinkageError: loader constraint violation: loader (instance of sun/misc/Launcher$AppClassLoader) previously initiated loading for a different type with name "org/apache/logging/log4j/util/MessageSupplier"     at net.minecraftforge.eventbus.EventBus.handleException(EventBus.java:316) ~[eventbus-4.0.0.jar:?] {}     at net.minecraftforge.eventbus.EventBus.post(EventBus.java:307) ~[eventbus-4.0.0.jar:?] {}     at net.minecraftforge.eventbus.EventBus.post(EventBus.java:283) ~[eventbus-4.0.0.jar:?] {}     at net.minecraftforge.event.ForgeEventFactory.gatherCapabilities(ForgeEventFactory.java:597) ~[?:?] {re:mixin,re:classloading}     at net.minecraftforge.event.ForgeEventFactory.gatherCapabilities(ForgeEventFactory.java:591) ~[?:?] {re:mixin,re:classloading}     at net.minecraftforge.common.capabilities.CapabilityProvider.doGatherCapabilities(CapabilityProvider.java:83) ~[?:?] {re:computing_frames,re:mixin,re:classloading}     at net.minecraftforge.common.capabilities.CapabilityProvider.getCapabilities(CapabilityProvider.java:91) ~[?:?] {re:computing_frames,re:mixin,re:classloading}     at net.minecraftforge.common.capabilities.CapabilityProvider.areCapsCompatible(CapabilityProvider.java:103) ~[?:?] {re:computing_frames,re:mixin,re:classloading}     at net.minecraft.item.ItemStack.func_77959_d(ItemStack.java:387) ~[?:?] {re:mixin,xf:fml:forge:filled_map.4,xf:fml:forge:itemstack,re:classloading,xf:fml:forge:filled_map.4,xf:fml:forge:itemstack,pl:mixin:APP:performant.mixins.json:item.ItemStackMixin,pl:mixin:APP:itemfilters-common.mixins.json:ItemStackMixin,pl:mixin:APP:epicfight.mixins.json:MixinItemStack,pl:mixin:A}     at net.minecraft.item.ItemStack.func_77989_b(ItemStack.java:375) ~[?:?] {re:mixin,xf:fml:forge:filled_map.4,xf:fml:forge:itemstack,re:classloading,xf:fml:forge:filled_map.4,xf:fml:forge:itemstack,pl:mixin:APP:performant.mixins.json:item.ItemStackMixin,pl:mixin:APP:itemfilters-common.mixins.json:ItemStackMixin,pl:mixin:APP:epicfight.mixins.json:MixinItemStack,pl:mixin:A}     at net.minecraft.entity.LivingEntity.func_241354_r_(LivingEntity.java:2267) ~[?:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:performant.mixins.json:entity.LivingEntityMixin,pl:mixin:APP:citadel.mixins.json:LivingEntityMixin,pl:mixin:APP:environmental.mixins.json:LivingEntityMixin,pl:mixin:APP:allurement.mixins.json:LivingEntityAccessor,pl:mixin:APP:allurement.mixins.json:LivingEntityMixin,pl:mixin:APP:ars_nouveau.mixins.json:ExpInvokerMixin,pl:mixin:APP:ars_nouveau.mixins.json:MixinLivingEntity,pl:mixin:APP:personality.mixins.json:LivingEntityMixin,pl:mixin:APP:assets/botania/botania.mixins.json:AccessorLivingEntity,pl:mixin:A}     at net.minecraft.entity.LivingEntity.func_241353_q_(LivingEntity.java:2239) ~[?:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:performant.mixins.json:entity.LivingEntityMixin,pl:mixin:APP:citadel.mixins.json:LivingEntityMixin,pl:mixin:APP:environmental.mixins.json:LivingEntityMixin,pl:mixin:APP:allurement.mixins.json:LivingEntityAccessor,pl:mixin:APP:allurement.mixins.json:LivingEntityMixin,pl:mixin:APP:ars_nouveau.mixins.json:ExpInvokerMixin,pl:mixin:APP:ars_nouveau.mixins.json:MixinLivingEntity,pl:mixin:APP:personality.mixins.json:LivingEntityMixin,pl:mixin:APP:assets/botania/botania.mixins.json:AccessorLivingEntity,pl:mixin:A}     at net.minecraft.entity.LivingEntity.func_70071_h_(LivingEntity.java:2141) ~[?:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:performant.mixins.json:entity.LivingEntityMixin,pl:mixin:APP:citadel.mixins.json:LivingEntityMixin,pl:mixin:APP:environmental.mixins.json:LivingEntityMixin,pl:mixin:APP:allurement.mixins.json:LivingEntityAccessor,pl:mixin:APP:allurement.mixins.json:LivingEntityMixin,pl:mixin:APP:ars_nouveau.mixins.json:ExpInvokerMixin,pl:mixin:APP:ars_nouveau.mixins.json:MixinLivingEntity,pl:mixin:APP:personality.mixins.json:LivingEntityMixin,pl:mixin:APP:assets/botania/botania.mixins.json:AccessorLivingEntity,pl:mixin:A}     at net.minecraft.entity.MobEntity.func_70071_h_(MobEntity.java:431) ~[?:?] {re:mixin,pl:accesstransformer:B,xf:OptiFine:default,re:classloading,pl:accesstransformer:B,xf:OptiFine:default,pl:mixin:APP:environmental.mixins.json:MobEntityMixin,pl:mixin:APP:assets/botania/botania.mixins.json:AccessorMobEntity,pl:mixin:APP:performant.mixins.json:entity.MobEntityDespawnMixin,pl:mixin:APP:performant.mixins.json:entity.MobEntityMixin,pl:mixin:A}     at net.minecraft.world.server.ServerWorld.func_217479_a(ServerWorld.java:611) ~[?:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:performant.mixins.json:world.ServerWorldBlockUpdateMixin,pl:mixin:APP:abnormals_core.mixins.json:ServerWorldMixin,pl:mixin:APP:performant.mixins.json:world.ServerWorldMixin,pl:mixin:APP:performant.mixins.json:entity.MobServerWorldMixin,pl:mixin:A}     at net.minecraft.world.server.ServerWorld$$Lambda$16565/514282080.accept(Unknown Source) ~[?:?] {}     at net.minecraft.world.World.func_217390_a(World.java:554) ~[?:?] {re:computing_frames,pl:accesstransformer:B,xf:fml:observerlib:coremodmethod,re:mixin,pl:accesstransformer:B,xf:fml:observerlib:coremodmethod,re:classloading,pl:accesstransformer:B,xf:fml:observerlib:coremodmethod,pl:mixin:APP:sereneseasons.mixins.json:MixinWorld,pl:mixin:APP:flywheel.mixins.json:TileWorldHookMixin,pl:mixin:A}     at net.minecraft.world.server.ServerWorld.func_72835_b(ServerWorld.java:404) ~[?:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:performant.mixins.json:world.ServerWorldBlockUpdateMixin,pl:mixin:APP:abnormals_core.mixins.json:ServerWorldMixin,pl:mixin:APP:performant.mixins.json:world.ServerWorldMixin,pl:mixin:APP:performant.mixins.json:entity.MobServerWorldMixin,pl:mixin:A}     at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:851) ~[?:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:structure_gel.mixins.json:MinecraftServerMixin,pl:mixin:APP:byg.mixins.json:server.MixinMinecraftServer,pl:mixin:APP:marg.mixins.json:MinecraftServerMixin,pl:mixin:A}     at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:787) ~[?:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:structure_gel.mixins.json:MinecraftServerMixin,pl:mixin:APP:byg.mixins.json:server.MixinMinecraftServer,pl:mixin:APP:marg.mixins.json:MinecraftServerMixin,pl:mixin:A}     at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:118) ~[?:?] {re:mixin,xf:OptiFine:default,re:classloading,xf:OptiFine:default,pl:mixin:APP:smoothboot.mixins.json:client.IntegratedServerMixin,pl:mixin:A}     at net.minecraft.server.MinecraftServer.func_240802_v_(MinecraftServer.java:642) [?:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:structure_gel.mixins.json:MinecraftServerMixin,pl:mixin:APP:byg.mixins.json:server.MixinMinecraftServer,pl:mixin:APP:marg.mixins.json:MinecraftServerMixin,pl:mixin:A}     at net.minecraft.server.MinecraftServer.func_240783_a_(MinecraftServer.java:232) [?:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:structure_gel.mixins.json:MinecraftServerMixin,pl:mixin:APP:byg.mixins.json:server.MixinMinecraftServer,pl:mixin:APP:marg.mixins.json:MinecraftServerMixin,pl:mixin:A}     at net.minecraft.server.MinecraftServer$$Lambda$15673/85323444.run(Unknown Source) [?:?] {}     at java.lang.Thread.run(Thread.java:745) [?:1.8.0_51] {} Caused by: java.lang.LinkageError: loader constraint violation: loader (instance of sun/misc/Launcher$AppClassLoader) previously initiated loading for a different type with name "org/apache/logging/log4j/util/MessageSupplier"     at java.lang.ClassLoader.defineClass1(Native Method) ~[?:1.8.0_51] {}     at java.lang.ClassLoader.defineClass(ClassLoader.java:760) ~[?:1.8.0_51] {}     at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) ~[?:1.8.0_51] {}     at java.net.URLClassLoader.defineClass(URLClassLoader.java:467) ~[?:1.8.0_51] {}     at java.net.URLClassLoader.access$100(URLClassLoader.java:73) ~[?:1.8.0_51] {}     at java.net.URLClassLoader$1.run(URLClassLoader.java:368) ~[?:1.8.0_51] {}     at java.net.URLClassLoader$1.run(URLClassLoader.java:362) ~[?:1.8.0_51] {}     at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_51] {}     at java.net.URLClassLoader.findClass(URLClassLoader.java:361) ~[?:1.8.0_51] {}     at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_51] {}     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) ~[?:1.8.0_51] {}     at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_51] {}     ... 25 more for full report https://pastebin.com/Did3vHvR    
    • you need to create a new ForgeSpawnEggItem and not a SpawnEggItem!
    • this is at the moment not implemented, since vanilla changed the Biome generation, and the old Forge patch doesn't work anymore you need to wait till it's will be added back
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