[09:41:05] [Server thread/ERROR] [minecraft/MinecraftServer]: Encountered an unexpected exception
java.lang.ClassCastException: class net.minecraft.core.MappedRegistry$1 cannot be cast to class dev.worldgen.lithostitched.mixin.common.MappedRegistryAccessor (net.minecraft.core.MappedRegistry$1 is in module minecraft@1.21.1 of loader 'TRANSFORMER' @6403e24c; dev.worldgen.lithostitched.mixin.common.MappedRegistryAccessor is in module lithostitched@1.5.0+beta1 of loader 'TRANSFORMER' @6403e24c)
at TRANSFORMER/lithostitched@1.5.0+beta1/dev.worldgen.lithostitched.worldgen.modifier.SetStructureSpawnConditionModifier.applyModifier(SetStructureSpawnConditionModifier.java:43) ~[lithostitched-1.5.0+beta1-neoforge-1.21.1.jar%23193!/:?] {re:classloading}
at TRANSFORMER/lithostitched@1.5.0+beta1/dev.worldgen.lithostitched.worldgen.modifier.SetStructureSpawnConditionModifier.lambda$applyModifier$1(SetStructureSpawnConditionModifier.java:33) ~[lithostitched-1.5.0+beta1-neoforge-1.21.1.jar%23193!/:?] {re:classloading}
at java.base/java.lang.Iterable.forEach(Iterable.java:75) ~[?:?] {re:mixin}
at TRANSFORMER/lithostitched@1.5.0+beta1/dev.worldgen.lithostitched.worldgen.modifier.SetStructureSpawnConditionModifier.applyModifier(SetStructureSpawnConditionModifier.java:33) ~[lithostitched-1.5.0+beta1-neoforge-1.21.1.jar%23193!/:?] {re:classloading}
at TRANSFORMER/lithostitched@1.5.0+beta1/dev.worldgen.lithostitched.worldgen.modifier.Modifier.applyPhaseModifiers(Modifier.java:87) ~[lithostitched-1.5.0+beta1-neoforge-1.21.1.jar%23193!/:?] {re:classloading,re:mixin}
at TRANSFORMER/lithostitched@1.5.0+beta1/dev.worldgen.lithostitched.worldgen.modifier.Modifier.applyModifiers(Modifier.java:60) ~[lithostitched-1.5.0+beta1-neoforge-1.21.1.jar%23193!/:?] {re:classloading,re:mixin}
at TRANSFORMER/minecraft@1.21.1/net.minecraft.client.server.IntegratedServer.handler$zzg001$lithostitched$initServer(IntegratedServer.java:516) ~[client-1.21.1-20240808.144430-srg.jar%23190!/:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:APP:lithostitched.mixins.json:client.IntegratedServerMixin from mod lithostitched,pl:mixin:A,pl:runtimedistcleaner:A}
at TRANSFORMER/minecraft@1.21.1/net.minecraft.client.server.IntegratedServer.initServer(IntegratedServer.java:77) ~[client-1.21.1-20240808.144430-srg.jar%23190!/:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:APP:lithostitched.mixins.json:client.IntegratedServerMixin from mod lithostitched,pl:mixin:A,pl:runtimedistcleaner:A}
at TRANSFORMER/minecraft@1.21.1/net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:670) ~[client-1.21.1-20240808.144430-srg.jar%23190!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B}
at TRANSFORMER/minecraft@1.21.1/net.minecraft.server.MinecraftServer.lambda$spin$2(MinecraftServer.java:267) ~[client-1.21.1-20240808.144430-srg.jar%23190!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B}
at java.base/java.lang.Thread.run(Thread.java:1583) [?:?] {}
[09:41:05] [Server thread/FATAL] [ne.ne.ne.co.NeoForgeMod/]: Preparing crash report with UUID f900d662-5763-48d6-9011-9864bfa9b988
[09:41:05] [Server thread/ERROR] [minecraft/MinecraftServer]: This crash report has been saved to: C:\Users\********\AppData\Roaming\PrismLauncher\instances\Clean field\minecraft\crash-reports\crash-2025-07-22_09.41.05-server.txt
[09:41:05] [Server thread/INFO] [minecraft/MinecraftServer]: Stopping server
[09:41:05] [Server thread/INFO] [minecraft/MinecraftServer]: Saving players
[09:41:05] [Server thread/INFO] [minecraft/MinecraftServer]: Saving worlds
[09:41:05] [Server thread/ERROR] [minecraft/MinecraftServer]: Exception stopping the server
java.lang.NullPointerException: Cannot invoke "net.minecraft.server.level.ServerLevel.getWorldBorder()" because "serverlevel2" is null
at TRANSFORMER/minecraft@1.21.1/net.minecraft.server.MinecraftServer.saveAllChunks(MinecraftServer.java:557) ~[client-1.21.1-20240808.144430-srg.jar%23190!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B}
at TRANSFORMER/minecraft@1.21.1/net.minecraft.server.MinecraftServer.stopServer(MinecraftServer.java:622) ~[client-1.21.1-20240808.144430-srg.jar%23190!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B}
at TRANSFORMER/minecraft@1.21.1/net.minecraft.client.server.IntegratedServer.stopServer(IntegratedServer.java:221) ~[client-1.21.1-20240808.144430-srg.jar%23190!/:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:APP:lithostitched.mixins.json:client.IntegratedServerMixin from mod lithostitched,pl:mixin:A,pl:runtimedistcleaner:A}
at TRANSFORMER/minecraft@1.21.1/net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:742) ~[client-1.21.1-20240808.144430-srg.jar%23190!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B}
at TRANSFORMER/minecraft@1.21.1/net.minecraft.server.MinecraftServer.lambda$spin$2(MinecraftServer.java:267) ~[client-1.21.1-20240808.144430-srg.jar%23190!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B}
at java.base/java.lang.Thread.run(Thread.java:1583) [?:?] {}