Unusual Crash

I am experiencing this crash on 47.3.29 on Forge 1.20.1
Its a bit different each time but usually it either results in flat memory and flat cpu usage at like 20 percent and 3 percent respectively or a crash without a crash report.

Check comments for the logs

ParrotQuackOP•3/16/25, 7:04 PM

First segment is usally this:

java.util.concurrent.ExecutionException: java.lang.RuntimeException: Tried to read NBT tag with too high complexity, depth > 512
at java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:396) ~[?:?]
at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2073) ~[?:?]
at net.minecraft.server.Main.main(Main.java:195) ~[server-1.20.1-20230612.114412-srg.jar%23477!/:?]
at jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) ~[?:?]
at java.lang.reflect.Method.invoke(Method.java:580) ~[?:?]
at net.minecraftforge.fml.loading.targets.CommonLaunchHandler.runTarget(CommonLaunchHandler.java:111) ~[fmlloader-1.20.1-47.3.12.jar%2369!/:?]
at net.minecraftforge.fml.loading.targets.CommonLaunchHandler.serverService(CommonLaunchHandler.java:103) ~[fmlloader-1.20.1-47.3.12.jar%2369!/:?]
at net.minecraftforge.fml.loading.targets.CommonServerLaunchHandler.lambda$makeService$0(CommonServerLaunchHandler.java:27) ~[fmlloader-1.20.1-47.3.12.jar%2369!/:?]
at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:30) ~[modlauncher-10.0.9.jar%2355!/:?]
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53) ~[modlauncher-10.0.9.jar%2355!/:?]
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71) ~[modlauncher-10.0.9.jar%2355!/:?]
at cpw.mods.modlauncher.Launcher.run(Launcher.java:108) ~[modlauncher-

ParrotQuackOP•3/16/25, 7:04 PM

Then, this segment repeats constantly:

at net.minecraft.nbt.CompoundTag$1.m7300(CompoundTag.java:45) ~[server-1.20.1-20230612.114412-srg.jar%23477!/:?] {re:mixin,pl:connector_pre_launch:A,re:classloading,pl:rei_plugin_compatibilities:B,pl:mixin:APP:modernfix-common.mixins.json:perf.nbt_memory_usage.CompoundTag1Mixin from mod modernfix,pl:mixin:APP:lithium.mixins.json:alloc.nbt.NbtCompoundMixin$Type from mod radium,pl:mixin:A,pl:connector_pre_launch:A}
at net.minecraft.nbt.CompoundTag$1.m7300(CompoundTag.java:32) ~[server-1.20.1-20230612.114412-srg.jar%23477!/:?] {re:mixin,pl:connector_pre_launch:A,re:classloading,pl:rei_plugin_compatibilities:B,pl:mixin:APP:modernfix-common.mixins.json:perf.nbt_memory_usage.CompoundTag1Mixin from mod modernfix,pl:mixin:APP:lithium.mixins.json:alloc.nbt.NbtCompoundMixin$Type from mod radium,pl:mixin:A,pl:connector_pre_launch:A}
at net.minecraft.nbt.CompoundTag.m128413(CompoundTag.java:474) ~[server-1.20.1-20230612.114412-srg.jar%23477!/:?] {re:mixin,pl:accesstransformer:B,pl:connector_pre_launch:A,re:computing_frames,pl:accesstransformer:B,pl:rei_plugin_compatibilities:B,pl:connector_pre_launch:A,re:classloading,pl:accesstransformer:B,pl:rei_plugin_compatibilities:B,pl:mixin:APP:modernfix-common.mixins.json:perf.nbt_memory_usage.CompoundTagMixin from mod modernfix,pl:mixin:APP:lithium.mixins.json:alloc.nbt.NbtCompoundMixin from mod radium,pl:mixin:APP:owo.mixins.json:NbtCompoundMixin from mod owo,pl:mixin:A,pl:connector_pre_launch:A}