Context: My kid's MC server is crashing after updating. BMC4 support sent me here for assistance.

Update process was to download the BMC4 server v44 zip, extract, and replace the existing folders with the new ones.

Please help, can't MC with my kid :(

Here's the error from the logs.

// Hi. I'm Connector, and I'm a crashaholic

SINYTRA CONNECTOR IS PRESENT!
Please verify issues are not caused by Connector before reporting them to mod authors.
If you're unsure, file a report on Connector's issue tracker found at https://github.com/Sinytra/Connector/issues.

// This modpack was created by Lunapixel Studios. To resolve this crash, please join discord.gg/lunapixel and read the #get-support Discord channel.

Time: 2025-06-29 14:23:23
Description: Mod loading error has occurred

java.lang.Exception: Mod Loading has failed
at net.minecraftforge.logging.CrashReportExtender.dumpModLoadingCrashReport(CrashReportExtender.java:60) ~[forge-1.20.1-47.3.12-universal.jar%23691!/:?] {re:mixin,re:classloading,pl:mixin:APP:connectormod.mixins.json:CrashReportExtenderMixin from mod connectormod,pl:mixin:A}
at net.minecraftforge.server.loading.ServerModLoader.load(ServerModLoader.java:37) ~[forge-1.20.1-47.3.12-universal.jar%23691!/:?] {re:classloading}
at net.minecraft.server.Main.main(Main.java:125) ~[server-1.20.1-20230612.114412-srg.jar%23686!/:?] {re:mixin,pl:connector_pre_launch:A,re:classloading,re:mixin,pl:connector_pre_launch:A,pl:mixin:A,pl:connector_pre_launch:A}
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-10.0.9.jar%2355!/:?] {}
at cpw.mods.modlauncher.Launcher.main(Launcher.java:78) ~[modlauncher-10.0.9.jar%2355!/:?] {}
at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) ~[modlauncher-10.0.9.jar%2355!/:?] {}
at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23) ~[modlauncher-10.0.9.jar%2355!/:?] {}
at cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:141) ~[bootstraplauncher-1.1.2.jar:?] {}

A detailed walkthrough of the error, its code path and all known details is as follows:

-- Head --
Thread: main
Suspected Mod:
MiscTweaks (misctweaks), Version: 1.1.2
at TRANSFORMER/[email protected]/me.pajic.misctweaks.Main.(Main.java:22)
Stacktrace:
at me.pajic.misctweaks.Main.(Main.java:22) ~[misctweaks-1.1.2+1.20.1.jar%23573!/:1.1.2+1.20.1] {re:mixin,re:classloading}
[MixinTraceReforged] Mixins in Stack Trace: None found
-- MOD misctweaks --
Details:
Mod File: /home/spetz/Documents/BMC4/BMC4_Server_Pack_v36/mods/misctweaks-1.1.2+1.20.1.jar
Failure message: MiscTweaks (misctweaks) has failed to load correctly
java.lang.NoSuchMethodError: 'net.minecraft.resources.ResourceLocation net.minecraft.resources.ResourceLocation.fromNamespaceAndPath(java.lang.String, java.lang.String)'
Mod Version: 1.1.2
Mod Issue URL: NOT PROVIDED
Exception message: java.lang.NoSuchMethodError: 'net.minecraft.resources.ResourceLocation net.minecraft.resources.ResourceLocation.fromNamespaceAndPath(java.lang.String, java.lang.String)'
Stacktrace:
at me.pajic.misctweaks.Main.(Main.java:22) ~[misctweaks-1.1.2+1.20.1.jar%23573!/:1.1.2+1.20.1] {re:mixin,re:classloading}
at jdk.internal.misc.Unsafe.ensureClassInitialized0(Native Method) ~[?:?] {}
at jdk.internal.misc.Unsafe.ensureClassInitialized(Unsafe.java:1160) ~[?:?] {}
at jdk.internal.reflect.MethodHandleAccessorFactory.ensureClassInitialized(MethodHandleAccessorFactory.java:300) ~[?:?] {}
at jdk.internal.reflect.MethodHandleAccessorFactory.newConstructorAccessor(MethodHandleAccessorFactory.java:103) ~[?:?] {}
at jdk.internal.reflect.ReflectionFactory.newConstructorAccessor(ReflectionFactory.java:200) ~[?:?] {}
at java.lang.reflect.Constructor.acquireConstructorAccessor(Constructor.java:549) ~[?:?] {}
at java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) ~[?:?] {}
at java.lang.reflect.Constructor.newInstance(Constructor.java:486) ~[?:?] {}
at net.minecraftforge.fml.javafmlmod.FMLModContainer.constructMod(FMLModContainer.java:77) ~[javafmllanguage-1.20.1-47.3.12.jar%23688!/:?] {}
at net.minecraftforge.fml.ModContainer.lambda$buildTransitionHandler$4(ModContainer.java:124) ~[fmlcore-1.20.1-47.3.12.jar%23687!/:?] {re:mixin}
at java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1804) ~[?:?] {}
at java.util.concurrent.CompletableFuture$AsyncRun.exec(CompletableFuture.java:1796) ~[?:?] {}
at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:387) ~[?:?] {}
at java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1312) ~[?:?] {}
at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1843) ~[?:?] {re:mixin,re:computing_frames}
at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1808) ~[?:?] {re:mixin,re:computing_frames}
at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:188) ~[?:?] {re:mixin}

[MixinTraceReforged] Mixins in Stack Trace: None found

JVM Flags: 9 total; -XX:+UseG1GC -Xmx12G -Xms12G -XX:+UnlockExperimentalVMOptions -XX:+DisableExplicitGC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32

FIXED - update forge server.