Crashed whilst initializing game

I am throwing some mods together and started getting this error whenever I boot up the game:
org.spongepowered.asm.mixin.transformer.throwables.MixinTransformerError: An unexpected critical error was encountered

here is the crash report:

---- Minecraft Crash Report ----
// I let you down. Sorry :frowning:

Time: 2023-09-13 12:13:47
Description: Initializing game

org.spongepowered.asm.mixin.transformer.throwables.MixinTransformerError: An unexpected critical error was encountered
at org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:392) ~[mixin-0.8.5.jar:0.8.5+Jenkins-b310.git-155314e6e91465dad727e621a569906a410cd6f4] {}
at org.spongepowered.asm.mixin.transformer.MixinTransformer.transformClass(MixinTransformer.java:250) ~[mixin-0.8.5.jar:0.8.5+Jenkins-b310.git-155314e6e91465dad727e621a569906a410cd6f4] {}
at org.spongepowered.asm.service.modlauncher.MixinTransformationHandler.processClass(MixinTransformationHandler.java:131) ~[mixin-0.8.5.jar:0.8.5+Jenkins-b310.git-155314e6e91465dad727e621a569906a410cd6f4] {}
at org.spongepowered.asm.launch.MixinLaunchPluginLegacy.processClass(MixinLaunchPluginLegacy.java:131) ~[mixin-0.8.5.jar:0.8.5+Jenkins-b310.git-155314e6e91465dad727e621a569906a410cd6f4] {}
at cpw.mods.modlauncher.serviceapi.ILaunchPluginService.processClassWithFlags(ILaunchPluginService.java:156) ~[modlauncher-10.0.9.jar:10.0.9+10.0.9+main.dcd20f30] {}
at cpw.mods.modlauncher.LaunchPluginHandler.offerClassNodeToPlugins(LaunchPluginHandler.java:88) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.ClassTransformer.transform(ClassTransformer.java:120) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.TransformingClassLoader.maybeTransformClassBytes(TransformingClassLoader.java:50) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.cl.ModuleClassLoader.readerToClass(ModuleClassLoader.java:113) ~[securejarhandler-2.1.10.jar:?] {}
at cpw.mods.cl.ModuleClassLoader.lambda$findClass$15(ModuleClassLoader.java:219) ~[securejarhandler-2.1.10.jar:?] {}
at cpw.mods.cl.ModuleClassLoader.loadFromModule(ModuleClassLoader.java:229) ~[securejarhandler-2.1.10.jar:?] {}
at cpw.mods.cl.ModuleClassLoader.findClass(ModuleClassLoader.java:219) ~[securejarhandler-2.1.10.jar:?] {}
at cpw.mods.cl.ModuleClassLoader.loadClass(ModuleClassLoader.java:135) ~[securejarhandler-2.1.10.jar:?] {}
at java.lang.ClassLoader.loadClass(ClassLoader.java:520) ~[?:?] {}
at net.minecraft.server.packs.metadata.pack.PackMetadataSectionSerializer.m_6322_(PackMetadataSectionSerializer.java:16) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:classloading}
at net.minecraft.server.packs.metadata.pack.PackMetadataSectionSerializer.m_6322_(PackMetadataSectionSerializer.java:9) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:classloading}
at net.minecraft.server.packs.AbstractPackResources.m_10214_(AbstractPackResources.java:52) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:classloading}
at net.minecraft.server.packs.AbstractPackResources.m_5550_(AbstractPackResources.java:33) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:classloading}
at net.minecraft.server.packs.repository.Pack.m_246334_(Pack.java:60) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:classloading}
at net.minecraft.server.packs.repository.Pack.m_245429_(Pack.java:35) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:classloading}
at net.minecraft.client.resources.ClientPackSource.m_246091_(ClientPackSource.java:94) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:classloading,pl:accesstransformer:B}
at net.minecraft.server.packs.repository.BuiltInPackSource.m_247024_(BuiltInPackSource.java:76) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:classloading}
at net.minecraft.server.packs.repository.BuiltInPackSource.m_246863_(BuiltInPackSource.java:61) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:classloading}
at java.util.HashMap.forEach(HashMap.java:1421) ~[?:?] {re:mixin}
at net.minecraft.server.packs.repository.BuiltInPackSource.m_245188_(BuiltInPackSource.java:60) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:classloading}
at net.minecraft.server.packs.repository.BuiltInPackSource.m_7686_(BuiltInPackSource.java:43) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:classloading}
at net.minecraft.server.packs.repository.PackRepository.m_10526_(PackRepository.java:39) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:classloading}
at net.minecraft.server.packs.repository.PackRepository.m_10506_(PackRepository.java:31) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:classloading}
at net.minecraft.client.Minecraft.(Minecraft.java:460) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.client.main.Main.main(Main.java:182) ~[forge-47.1.47.jar:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:APP:flywheel.mixins.json:ClientMainMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?] {}
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?] {}
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?] {}
at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?] {}
at net.minecraftforge.fml.loading.targets.CommonLaunchHandler.runTarget(CommonLaunchHandler.java:111) ~[fmlloader-1.20.1-47.1.47.jar:?] {}
at net.minecraftforge.fml.loading.targets.CommonLaunchHandler.clientService(CommonLaunchHandler.java:99) ~[fmlloader-1.20.1-47.1.47.jar:?] {}
at net.minecraftforge.fml.loading.targets.CommonClientLaunchHandler.lambda$makeService$0(CommonClientLaunchHandler.java:25) ~[fmlloader-1.20.1-47.1.47.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:30) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.Launcher.run(Launcher.java:108) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.Launcher.main(Launcher.java:78) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:141) ~[bootstraplauncher-1.1.2.jar:?] {}
Caused by: org.spongepowered.asm.mixin.throwables.ClassMetadataNotFoundException: dev.shadowsoffire.placebo.Placebo
at org.spongepowered.asm.mixin.transformer.MixinPreProcessorStandard.transformField(MixinPreProcessorStandard.java:771) ~[mixin-0.8.5.jar:0.8.5+Jenkins-b310.git-155314e6e91465dad727e621a569906a410cd6f4] {}
at org.spongepowered.asm.mixin.transformer.MixinPreProcessorStandard.transform(MixinPreProcessorStandard.java:741) ~[mixin-0.8.5.jar:0.8.5+Jenkins-b310.git-155314e6e91465dad727e621a569906a410cd6f4] {}
at org.spongepowered.asm.mixin.transformer.MixinPreProcessorStandard.attach(MixinPreProcessorStandard.java:310) ~[mixin-0.8.5.jar:0.8.5+Jenkins-b310.git-155314e6e91465dad727e621a569906a410cd6f4] {}
at org.spongepowered.asm.mixin.transformer.MixinPreProcessorStandard.createContextFor(MixinPreProcessorStandard.java:280) ~[mixin-0.8.5.jar:0.8.5+Jenkins-b310.git-155314e6e91465dad727e621a569906a410cd6f4] {}
at org.spongepowered.asm.mixin.transformer.MixinInfo.createContextFor(MixinInfo.java:1288) ~[mixin-0.8.5.jar:0.8.5+Jenkins-b310.git-155314e6e91465dad727e621a569906a410cd6f4] {}
at org.spongepowered.asm.mixin.transformer.MixinApplicatorStandard.apply(MixinApplicatorStandard.java:292) ~[mixin-0.8.5.jar:0.8.5+Jenkins-b310.git-155314e6e91465dad727e621a569906a410cd6f4] {}
at org.spongepowered.asm.mixin.transformer.TargetClassContext.apply(TargetClassContext.java:383) ~[mixin-0.8.5.jar:0.8.5+Jenkins-b310.git-155314e6e91465dad727e621a569906a410cd6f4] {}
at org.spongepowered.asm.mixin.transformer.TargetClassContext.applyMixins(TargetClassContext.java:365) ~[mixin-0.8.5.jar:0.8.5+Jenkins-b310.git-155314e6e91465dad727e621a569906a410cd6f4] {}
at org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:363) ~[mixin-0.8.5.jar:0.8.5+Jenkins-b310.git-155314e6e91465dad727e621a569906a410cd6f4] {}
… 44 more

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

– Head –
Thread: Render thread
Stacktrace:
at org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:392) ~[mixin-0.8.5.jar:0.8.5+Jenkins-b310.git-155314e6e91465dad727e621a569906a410cd6f4] {}
at org.spongepowered.asm.mixin.transformer.MixinTransformer.transformClass(MixinTransformer.java:250) ~[mixin-0.8.5.jar:0.8.5+Jenkins-b310.git-155314e6e91465dad727e621a569906a410cd6f4] {}
at org.spongepowered.asm.service.modlauncher.MixinTransformationHandler.processClass(MixinTransformationHandler.java:131) ~[mixin-0.8.5.jar:0.8.5+Jenkins-b310.git-155314e6e91465dad727e621a569906a410cd6f4] {}
at org.spongepowered.asm.launch.MixinLaunchPluginLegacy.processClass(MixinLaunchPluginLegacy.java:131) ~[mixin-0.8.5.jar:0.8.5+Jenkins-b310.git-155314e6e91465dad727e621a569906a410cd6f4] {}
at cpw.mods.modlauncher.serviceapi.ILaunchPluginService.processClassWithFlags(ILaunchPluginService.java:156) ~[modlauncher-10.0.9.jar:10.0.9+10.0.9+main.dcd20f30] {}
at cpw.mods.modlauncher.LaunchPluginHandler.offerClassNodeToPlugins(LaunchPluginHandler.java:88) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.ClassTransformer.transform(ClassTransformer.java:120) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.TransformingClassLoader.maybeTransformClassBytes(TransformingClassLoader.java:50) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.cl.ModuleClassLoader.readerToClass(ModuleClassLoader.java:113) ~[securejarhandler-2.1.10.jar:?] {}
at cpw.mods.cl.ModuleClassLoader.lambda$findClass$15(ModuleClassLoader.java:219) ~[securejarhandler-2.1.10.jar:?] {}
at cpw.mods.cl.ModuleClassLoader.loadFromModule(ModuleClassLoader.java:229) ~[securejarhandler-2.1.10.jar:?] {}
at cpw.mods.cl.ModuleClassLoader.findClass(ModuleClassLoader.java:219) ~[securejarhandler-2.1.10.jar:?] {}
at cpw.mods.cl.ModuleClassLoader.loadClass(ModuleClassLoader.java:135) ~[securejarhandler-2.1.10.jar:?] {}
at java.lang.ClassLoader.loadClass(ClassLoader.java:520) ~[?:?] {}
at net.minecraft.server.packs.metadata.pack.PackMetadataSectionSerializer.m_6322_(PackMetadataSectionSerializer.java:16) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:classloading}
at net.minecraft.server.packs.metadata.pack.PackMetadataSectionSerializer.m_6322_(PackMetadataSectionSerializer.java:9) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:classloading}
at net.minecraft.server.packs.AbstractPackResources.m_10214_(AbstractPackResources.java:52) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:classloading}
at net.minecraft.server.packs.AbstractPackResources.m_5550_(AbstractPackResources.java:33) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:classloading}
at net.minecraft.server.packs.repository.Pack.m_246334_(Pack.java:60) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:classloading}
at net.minecraft.server.packs.repository.Pack.m_245429_(Pack.java:35) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:classloading}
at net.minecraft.client.resources.ClientPackSource.m_246091_(ClientPackSource.java:94) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:classloading,pl:accesstransformer:B}
at net.minecraft.server.packs.repository.BuiltInPackSource.m_247024_(BuiltInPackSource.java:76) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:classloading}
at net.minecraft.server.packs.repository.BuiltInPackSource.m_246863_(BuiltInPackSource.java:61) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:classloading}
at java.util.HashMap.forEach(HashMap.java:1421) ~[?:?] {re:mixin}
at net.minecraft.server.packs.repository.BuiltInPackSource.m_245188_(BuiltInPackSource.java:60) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:classloading}
at net.minecraft.server.packs.repository.BuiltInPackSource.m_7686_(BuiltInPackSource.java:43) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:classloading}
at net.minecraft.server.packs.repository.PackRepository.m_10526_(PackRepository.java:39) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:classloading}
at net.minecraft.server.packs.repository.PackRepository.m_10506_(PackRepository.java:31) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:classloading}
at net.minecraft.client.Minecraft.(Minecraft.java:460) ~[client-1.20.1-20230612.114412-srg.jar%23254!/:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:A,pl:runtimedistcleaner:A}
– Initialization –
Details:
Modules:
ADVAPI32.dll:Advanced Windows 32 Base API:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
COMCTL32.dll:User Experience Controls Library:6.10 (WinBuild.160101.0800):Microsoft Corporation
CRYPT32.dll:Crypto API32:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
CRYPTBASE.dll:Base cryptographic API DLL:10.0.19041.546 (WinBuild.160101.0800):Microsoft Corporation
CRYPTSP.dll:Cryptographic Service Provider API:10.0.19041.546 (WinBuild.160101.0800):Microsoft Corporation
ColorAdapterClient.dll:Microsoft Color Adapter Client:10.0.19041.546 (WinBuild.160101.0800):Microsoft Corporation
CoreMessaging.dll:Microsoft CoreMessaging Dll:10.0.19041.3324:Microsoft Corporation
CoreUIComponents.dll:Microsoft Core UI Components Dll:10.0.19041.546:Microsoft Corporation
DBGHELP.DLL:Windows Image Helper:10.0.19041.867 (WinBuild.160101.0800):Microsoft Corporation
DEVOBJ.dll:Device Information Set DLL:10.0.19041.3155 (WinBuild.160101.0800):Microsoft Corporation
DNSAPI.dll:DNS Client API DLL:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
GDI32.dll:GDI Client DLL:10.0.19041.2913 (WinBuild.160101.0800):Microsoft Corporation
GLU32.dll:OpenGL Utility Library DLL:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
IMM32.DLL:Multi-User Windows IMM32 API Client DLL:10.0.19041.2673 (WinBuild.160101.0800):Microsoft Corporation
IPHLPAPI.DLL:IP Helper API:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
KERNEL32.DLL:Windows NT BASE API Client DLL:10.0.19041.3155 (WinBuild.160101.0800):Microsoft Corporation
KERNELBASE.dll:Windows NT BASE API Client DLL:10.0.19041.3155 (WinBuild.160101.0800):Microsoft Corporation
MSASN1.dll:ASN.1 Runtime APIs:10.0.19041.2251 (WinBuild.160101.0800):Microsoft Corporation
MSCTF.dll:MSCTF Server DLL:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
MpOav.dll:IOfficeAntiVirus Module:4.18.23080.2006 (04d8e871ffe7ba6b2204046883e1ad9b7a5989ce):Microsoft Corporation
NLAapi.dll:Network Location Awareness 2:10.0.19041.3031 (WinBuild.160101.0800):Microsoft Corporation
NSI.dll:NSI User-mode interface DLL:10.0.19041.610 (WinBuild.160101.0800):Microsoft Corporation
NTASN1.dll:Microsoft ASN.1 API:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
OLEAUT32.dll:OLEAUT32.DLL:10.0.19041.3208 (WinBuild.160101.0800):Microsoft Corporation
PROPSYS.dll:Microsoft Property System:7.0.19041.1708 (WinBuild.160101.0800):Microsoft Corporation
PSAPI.DLL:Process Status Helper:10.0.19041.546 (WinBuild.160101.0800):Microsoft Corporation
RPCRT4.dll:Remote Procedure Call Runtime:10.0.19041.2788 (WinBuild.160101.0800):Microsoft Corporation
SETUPAPI.dll:Windows Setup API:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
SHCORE.dll:SHCORE:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
SHELL32.dll:Windows Shell Common Dll:10.0.19041.964 (WinBuild.160101.0800):Microsoft Corporation
UMPDC.dll
USER32.dll:Multi-User Windows USER API Client DLL:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
USERENV.dll:Userenv:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
VCRUNTIME140.dll:Microsoft® C Runtime Library:14.29.30139.0 built by: vcwrkspc:Microsoft Corporation
VERSION.dll:Version Checking and File Installation Libraries:10.0.19041.546 (WinBuild.160101.0800):Microsoft Corporation
WINHTTP.dll:Windows HTTP Services:10.0.19041.2075 (WinBuild.160101.0800):Microsoft Corporation
WINMM.dll:MCI API DLL:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
WINSTA.dll:Winstation Library:10.0.19041.3155 (WinBuild.160101.0800):Microsoft Corporation
WS2_32.dll:Windows Socket 2.0 32-Bit DLL:10.0.19041.1081 (WinBuild.160101.0800):Microsoft Corporation
WSOCK32.dll:Windows Socket 32-Bit DLL:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
WTSAPI32.dll:Windows Remote Desktop Session Host Server SDK APIs:10.0.19041.546 (WinBuild.160101.0800):Microsoft Corporation
Wldp.dll:Windows Lockdown Policy:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
ammemb64.dll:Actual Multiple Monitors:8.15_en:Actual Tools
amsi.dll:Anti-Malware Scan Interface:10.0.19041.2075 (WinBuild.160101.0800):Microsoft Corporation
bcrypt.dll:Windows Cryptographic Primitives Library:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
bcryptPrimitives.dll:Windows Cryptographic Primitives Library:10.0.19041.2486 (WinBuild.160101.0800):Microsoft Corporation
cfgmgr32.dll:Configuration Manager DLL:10.0.19041.3155 (WinBuild.160101.0800):Microsoft Corporation
clbcatq.dll:COM+ Configuration Catalog:2001.12.10941.16384 (WinBuild.160101.0800):Microsoft Corporation
combase.dll:Microsoft COM for Windows:10.0.19041.1320 (WinBuild.160101.0800):Microsoft Corporation
cryptnet.dll:Crypto Network Related API:10.0.19041.906 (WinBuild.160101.0800):Microsoft Corporation
dbgcore.DLL:Windows Core Debugging Helpers:10.0.19041.2788 (WinBuild.160101.0800):Microsoft Corporation
dhcpcsvc.DLL:DHCP Client Service:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
dhcpcsvc6.DLL:DHCPv6 Client:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
dinput8.dll:Microsoft DirectInput:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
drvstore.dll:Driver Store API:10.0.19041.2546 (WinBuild.160101.0800):Microsoft Corporation
dwmapi.dll:Microsoft Desktop Window Manager API:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
dxcore.dll:DXCore:10.0.19041.546 (WinBuild.160101.0800):Microsoft Corporation
fwpuclnt.dll:FWP/IPsec User-Mode API:10.0.19041.2913 (WinBuild.160101.0800):Microsoft Corporation
gdi32full.dll:GDI Client DLL:10.0.19041.3271 (WinBuild.160101.0800):Microsoft Corporation
gdiplus.dll:Microsoft GDI+:10.0.19041.2251 (WinBuild.160101.0800):Microsoft Corporation
glfw.dll:GLFW 3.4.0 DLL:3.4.0:GLFW
gpapi.dll:Group Policy Client API:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
icm32.dll:Microsoft Color Management Module (CMM):10.0.19041.546 (WinBuild.160101.0800):Microsoft Corporation
imagehlp.dll:Windows NT Image Helper:10.0.19041.1415 (WinBuild.160101.0800):Microsoft Corporation
inputhost.dll:InputHost:10.0.19041.1741 (WinBuild.160101.0800):Microsoft Corporation
java.dll:OpenJDK Platform binary:17.0.3.0:Microsoft
javaw.exe:OpenJDK Platform binary:17.0.3.0:Microsoft
jemalloc.dll
jimage.dll:OpenJDK Platform binary:17.0.3.0:Microsoft
jli.dll:OpenJDK Platform binary:17.0.3.0:Microsoft
jna6416421726341089496.dll:JNA native library:6.1.4:Java™ Native Access (JNA)
jsvml.dll:OpenJDK Platform binary:17.0.3.0:Microsoft
jvm.dll:OpenJDK 64-Bit server VM:17.0.3.0:Microsoft
kernel.appcore.dll:AppModel API Host:10.0.19041.546 (WinBuild.160101.0800):Microsoft Corporation
lwjgl.dll
lwjgl_opengl.dll
lwjgl_stb.dll
management.dll:OpenJDK Platform binary:17.0.3.0:Microsoft
management_ext.dll:OpenJDK Platform binary:17.0.3.0:Microsoft
mscms.dll:Microsoft Color Matching System DLL:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
msvcp140.dll:Microsoft® C Runtime Library:14.29.30139.0 built by: vcwrkspc:Microsoft Corporation
msvcp_win.dll:Microsoft® C Runtime Library:10.0.19041.789 (WinBuild.160101.0800):Microsoft Corporation
msvcrt.dll:Windows NT CRT DLL:7.0.19041.546 (WinBuild.160101.0800):Microsoft Corporation
mswsock.dll:Microsoft Windows Sockets 2.0 Service Provider:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
napinsp.dll:E-mail Naming Shim Provider:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
ncrypt.dll:Windows NCrypt Router:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
net.dll:OpenJDK Platform binary:17.0.3.0:Microsoft
nio.dll:OpenJDK Platform binary:17.0.3.0:Microsoft
ntdll.dll:NT Layer DLL:10.0.19041.2788 (WinBuild.160101.0800):Microsoft Corporation
ntmarta.dll:Windows NT MARTA provider:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
nvoglv64.dll:NVIDIA Compatible OpenGL ICD:31.0.15.3623:NVIDIA Corporation
nvspcap64.dll:NVIDIA Game Proxy:3.27.0.112:NVIDIA Corporation
ole32.dll:Microsoft OLE for Windows:10.0.19041.1320 (WinBuild.160101.0800):Microsoft Corporation
oleacc.dll:Active Accessibility Core Component:7.2.19041.746 (WinBuild.160101.0800):Microsoft Corporation
opengl32.dll:OpenGL Client DLL:10.0.19041.2193 (WinBuild.160101.0800):Microsoft Corporation
pdh.dll:Windows Performance Data Helper DLL:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
perfos.dll:Windows System Performance Objects DLL:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
perfproc.dll:Windows System Process Performance Objects DLL:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
pnrpnsp.dll:PNRP Name Space Provider:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
powrprof.dll:Power Profile Helper DLL:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
profapi.dll:User Profile Basic API:10.0.19041.3155 (WinBuild.160101.0800):Microsoft Corporation
rasadhlp.dll:Remote Access AutoDial Helper:10.0.19041.546 (WinBuild.160101.0800):Microsoft Corporation
rsaenh.dll:Microsoft Enhanced Cryptographic Provider:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
sechost.dll:Host for SCM/SDDL/LSA Lookup APIs:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
shlwapi.dll:Shell Light-weight Utility Library:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
sunmscapi.dll:OpenJDK Platform binary:17.0.3.0:Microsoft
textinputframework.dll:“TextInputFramework.DYNLINK”:10.0.19041.3271 (WinBuild.160101.0800):Microsoft Corporation
ucrtbase.dll:Microsoft® C Runtime Library:10.0.19041.789 (WinBuild.160101.0800):Microsoft Corporation
uxtheme.dll:Microsoft UxTheme Library:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
vcruntime140_1.dll:Microsoft® C Runtime Library:14.29.30139.0 built by: vcwrkspc:Microsoft Corporation
verify.dll:OpenJDK Platform binary:17.0.3.0:Microsoft
win32u.dll:Win32u:10.0.19041.3271 (WinBuild.160101.0800):Microsoft Corporation
windows.storage.dll:Microsoft WinRT Storage API:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
winrnr.dll:LDAP RnR Provider DLL:10.0.19041.546 (WinBuild.160101.0800):Microsoft Corporation
wintrust.dll:Microsoft Trust Verification APIs:10.0.19041.3271 (WinBuild.160101.0800):Microsoft Corporation
wintypes.dll:Windows Base Types DLL:10.0.19041.1320 (WinBuild.160101.0800):Microsoft Corporation
wshbth.dll:Windows Sockets Helper DLL:10.0.19041.546 (WinBuild.160101.0800):Microsoft Corporation
xinput1_4.dll:Microsoft Common Controller API:10.0.19041.1 (WinBuild.160101.0800):Microsoft Corporation
zip.dll:OpenJDK Platform binary:17.0.3.0:Microsoft
Stacktrace:
at net.minecraft.client.main.Main.main(Main.java:182) ~[forge-47.1.47.jar:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:APP:flywheel.mixins.json:ClientMainMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?] {}
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?] {}
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?] {}
at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?] {}
at net.minecraftforge.fml.loading.targets.CommonLaunchHandler.runTarget(CommonLaunchHandler.java:111) ~[fmlloader-1.20.1-47.1.47.jar:?] {}
at net.minecraftforge.fml.loading.targets.CommonLaunchHandler.clientService(CommonLaunchHandler.java:99) ~[fmlloader-1.20.1-47.1.47.jar:?] {}
at net.minecraftforge.fml.loading.targets.CommonClientLaunchHandler.lambda$makeService$0(CommonClientLaunchHandler.java:25) ~[fmlloader-1.20.1-47.1.47.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:30) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.Launcher.run(Launcher.java:108) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.Launcher.main(Launcher.java:78) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23) ~[modlauncher-10.0.9.jar:?] {}
at cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:141) ~[bootstraplauncher-1.1.2.jar:?] {}

– System Details –
Details:
Minecraft Version: 1.20.1
Minecraft Version ID: 1.20.1
Operating System: Windows 10 (amd64) version 10.0
Java Version: 17.0.3, Microsoft
Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Microsoft
Memory: 140642160 bytes (134 MiB) / 570425344 bytes (544 MiB) up to 8455716864 bytes (8064 MiB)
CPUs: 8
Processor Vendor: GenuineIntel
Processor Name: Intel(R) Core™ i7-9700K CPU @ 3.60GHz
Identifier: Intel64 Family 6 Model 158 Stepping 13
Microarchitecture: Coffee Lake
Frequency (GHz): 3.60
Number of physical packages: 1
Number of physical CPUs: 8
Number of logical CPUs: 8
Graphics card #0 name: NVIDIA GeForce RTX 2070 SUPER
Graphics card #0 vendor: NVIDIA (0x10de)
Graphics card #0 VRAM (MB): 4095.00
Graphics card #0 deviceId: 0x1ec7
Graphics card #0 versionInfo: DriverVersion=31.0.15.3623
Memory slot #0 capacity (MB): 16384.00
Memory slot #0 clockSpeed (GHz): 3.20
Memory slot #0 type: DDR4
Memory slot #1 capacity (MB): 16384.00
Memory slot #1 clockSpeed (GHz): 3.20
Memory slot #1 type: DDR4
Virtual memory max (MB): 37566.47
Virtual memory used (MB): 19673.31
Swap memory total (MB): 4864.00
Swap memory used (MB): 85.66
JVM Flags: 4 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx8064m -Xms256m
Launched Version: forge-47.1.47
Backend library: LWJGL version 3.3.1 build 7
Backend API: NVIDIA GeForce RTX 2070 SUPER/PCIe/SSE2 GL version 4.6.0 NVIDIA 536.23, NVIDIA Corporation
Window size:
GL Caps: Using framebuffer using OpenGL 3.2
GL debug messages:
Using VBOs: Yes
Is Modded: Definitely; Client brand changed to ‘forge’
Type: Client (map_client.txt)
CPU: 8x Intel(R) Core™ i7-9700K CPU @ 3.60GHz
ModLauncher: 10.0.9+10.0.9+main.dcd20f30
ModLauncher launch target: forgeclient
ModLauncher naming: srg
ModLauncher services:
mixin-0.8.5.jar mixin PLUGINSERVICE
eventbus-6.0.5.jar eventbus PLUGINSERVICE
fmlloader-1.20.1-47.1.47.jar slf4jfixer PLUGINSERVICE
fmlloader-1.20.1-47.1.47.jar object_holder_definalize PLUGINSERVICE
fmlloader-1.20.1-47.1.47.jar runtime_enum_extender PLUGINSERVICE
fmlloader-1.20.1-47.1.47.jar capability_token_subclass PLUGINSERVICE
accesstransformers-8.0.4.jar accesstransformer PLUGINSERVICE
fmlloader-1.20.1-47.1.47.jar runtimedistcleaner PLUGINSERVICE
modlauncher-10.0.9.jar mixin TRANSFORMATIONSERVICE
modlauncher-10.0.9.jar fml TRANSFORMATIONSERVICE
FML Language Providers:
[email protected]
lowcodefml@null
javafml@null
Mod List:
client-1.20.1-20230612.114412-srg.jar |Minecraft |minecraft |1.20.1 |NONE |Manifest: a1:d4:5e:04:4f:d3:d6:e0:7b:37:97:cf:77:b0:de:ad:4a:47:ce:8c:96:49:5f:0a:cf:8c:ae:b2:6d:4b:8a:3f
forge-1.20.1-47.1.47-universal.jar |Forge |forge |47.1.47 |NONE |Manifest: 84:ce:76:e8:45:35:e4:0e:63:86:df:47:59:80:0f:67:6c:c1:5f:6e:5f:4d:b3:54:47:1a:9f:7f:ed:5e:f2:90

Any help would be super appreciated, as I am not the brightest with this stuff. Thank you!

This is another issue, not sponge. Mixins are built into Forge which any mod can use and thats giving you the text of sponge. This is the actual error

org.spongepowered.asm.mixin.throwables.ClassMetadataNotFoundException: dev.shadowsoffire.placebo.Placebo
at

Seems to be a missing mod

Awesome! Between that and me going through and deleting things until it worked, it seems like apotheosis had a dependency that it wasn’t auto downloading on forge. Thank you!

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