Hi guys. I'm making a Minecraft modpack for 1.20.1 with Forge 47.2.0
When i try to start the pack it just crashes, here is the crash report:

---- Minecraft Crash Report ----
// Hi. I'm Minecraft, and I'm a crashaholic.

Time: 2023-11-02 21:50:45
Description: Initializing game

java.lang.ExceptionInInitializerError: null
    at net.minecraft.client.color.block.BlockColors.handler$dhp000$snifferplus_registerBlockColorProviders(BlockColors.java:2521) ~[client-1.20.1-20230612.114412-srg.jar%23820!/:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:APP:rubidium.mixins.json:core.model.colors.BlockColorsMixin,pl:mixin:APP:aoa3.mixins.json:client.accessor.BlockColorsAccessor,pl:mixin:APP:puzzleslib.forge.mixins.json:client.accessor.BlockColorsForgeAccessor,pl:mixin:APP:aether.mixins.json:client.accessor.BlockColorsAccessor,pl:mixin:APP:snifferplus.mixins.json:MixinBlockColors,pl:mixin:A,pl:runtimedistcleaner:A}
    at net.minecraft.client.color.block.BlockColors.m_92574_(BlockColors.java:51) ~[client-1.20.1-20230612.114412-srg.jar%23820!/:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:APP:rubidium.mixins.json:core.model.colors.BlockColorsMixin,pl:mixin:APP:aoa3.mixins.json:client.accessor.BlockColorsAccessor,pl:mixin:APP:puzzleslib.forge.mixins.json:client.accessor.BlockColorsForgeAccessor,pl:mixin:APP:aether.mixins.json:client.accessor.BlockColorsAccessor,pl:mixin:APP:snifferplus.mixins.json:MixinBlockColors,pl:mixin:A,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft.<init>(Minecraft.java:485) ~[client-1.20.1-20230612.114412-srg.jar%23820!/:?] {re:mixin,pl:accesstransformer:B,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick_render_call,pl:runtimedistcleaner:A,re:mixin,pl:accesstransformer:B,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick_render_call,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick_render_call,pl:mixin:A,pl:runtimedistcleaner:A}
    at net.minecraft.client.main.Main.main(Main.java:182) ~[client-1.20.1.jar:?] {re:classloading,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-1.20.1-47.2.0.jar:?] {}
    at net.minecraftforge.fml.loading.targets.CommonLaunchHandler.clientService(CommonLaunchHandler.java:99) ~[fmlloader-1.20.1-47.2.0.jar:?] {}
    at net.minecraftforge.fml.loading.targets.CommonClientLaunchHandler.lambda$makeService$0(CommonClientLaunchHandler.java:25) ~[fmlloader-1.20.1-47.2.0.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: java.lang.NullPointerException: Cannot find mod container for id snifferplus
    at com.helliongames.snifferplus.registration.ForgeRegistrationFactory.create(ForgeRegistrationFactory.java:24) ~[Sniffer+-forge-1.20.1-0.2.0.jar%23752!/:0.2.0] {re:classloading}
    at com.helliongames.snifferplus.registration.util.RegistrationProvider.get(RegistrationProvider.java:38) ~[Sniffer+-forge-1.20.1-0.2.0.jar%23752!/:0.2.0] {re:classloading}
    at com.helliongames.snifferplus.registration.SnifferPlusBlocks.<clinit>(SnifferPlusBlocks.java:44) ~[Sniffer+-forge-1.20.1-0.2.0.jar%23752!/:0.2.0] {re:mixin,re:classloading}
    ... 19 more

How do I fix this? Thanks.

Also add the latest.log with sites like https://paste.ee/

or add the crash-report without sniffer+

 

19 hours ago, TileEntity said:

Also add the latest.log with sites like https://paste.ee/

or add the crash-report without sniffer+

 

Hi. I've added the latest.log with and without Sniffer+ 
https://paste.ee/p/hjAR7

Also, here is the crash report:
 

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

Time: 2023-11-03 21:57:52
Description: Initializing game

java.lang.ExceptionInInitializerError: null
    at net.minecraft.client.color.block.BlockColors.handler$dhp000$snifferplus_registerBlockColorProviders(BlockColors.java:2521) ~[client-1.20.1-20230612.114412-srg.jar%23820!/:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:APP:rubidium.mixins.json:core.model.colors.BlockColorsMixin,pl:mixin:APP:aoa3.mixins.json:client.accessor.BlockColorsAccessor,pl:mixin:APP:puzzleslib.forge.mixins.json:client.accessor.BlockColorsForgeAccessor,pl:mixin:APP:aether.mixins.json:client.accessor.BlockColorsAccessor,pl:mixin:APP:snifferplus.mixins.json:MixinBlockColors,pl:mixin:A,pl:runtimedistcleaner:A}
    at net.minecraft.client.color.block.BlockColors.m_92574_(BlockColors.java:51) ~[client-1.20.1-20230612.114412-srg.jar%23820!/:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:APP:rubidium.mixins.json:core.model.colors.BlockColorsMixin,pl:mixin:APP:aoa3.mixins.json:client.accessor.BlockColorsAccessor,pl:mixin:APP:puzzleslib.forge.mixins.json:client.accessor.BlockColorsForgeAccessor,pl:mixin:APP:aether.mixins.json:client.accessor.BlockColorsAccessor,pl:mixin:APP:snifferplus.mixins.json:MixinBlockColors,pl:mixin:A,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft.<init>(Minecraft.java:485) ~[client-1.20.1-20230612.114412-srg.jar%23820!/:?] {re:mixin,pl:accesstransformer:B,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick_render_call,pl:runtimedistcleaner:A,re:mixin,pl:accesstransformer:B,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick_render_call,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick_render_call,pl:mixin:A,pl:runtimedistcleaner:A}
    at net.minecraft.client.main.Main.main(Main.java:182) ~[client-1.20.1.jar:?] {re:classloading,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-1.20.1-47.2.0.jar:?] {}
    at net.minecraftforge.fml.loading.targets.CommonLaunchHandler.clientService(CommonLaunchHandler.java:99) ~[fmlloader-1.20.1-47.2.0.jar:?] {}
    at net.minecraftforge.fml.loading.targets.CommonClientLaunchHandler.lambda$makeService$0(CommonClientLaunchHandler.java:25) ~[fmlloader-1.20.1-47.2.0.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: java.lang.NullPointerException: Cannot find mod container for id snifferplus
    at com.helliongames.snifferplus.registration.ForgeRegistrationFactory.create(ForgeRegistrationFactory.java:24) ~[Sniffer+-forge-1.20.1-0.2.0.jar%23752!/:0.2.0] {re:classloading}
    at com.helliongames.snifferplus.registration.util.RegistrationProvider.get(RegistrationProvider.java:38) ~[Sniffer+-forge-1.20.1-0.2.0.jar%23752!/:0.2.0] {re:classloading}
    at com.helliongames.snifferplus.registration.SnifferPlusBlocks.<clinit>(SnifferPlusBlocks.java:44) ~[Sniffer+-forge-1.20.1-0.2.0.jar%23752!/:0.2.0] {re:mixin,re:classloading}
    ... 19 more

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

-- Head --
Thread: Render thread
Stacktrace:
    at net.minecraft.client.color.block.BlockColors.handler$dhp000$snifferplus_registerBlockColorProviders(BlockColors.java:2521) ~[client-1.20.1-20230612.114412-srg.jar%23820!/:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:APP:rubidium.mixins.json:core.model.colors.BlockColorsMixin,pl:mixin:APP:aoa3.mixins.json:client.accessor.BlockColorsAccessor,pl:mixin:APP:puzzleslib.forge.mixins.json:client.accessor.BlockColorsForgeAccessor,pl:mixin:APP:aether.mixins.json:client.accessor.BlockColorsAccessor,pl:mixin:APP:snifferplus.mixins.json:MixinBlockColors,pl:mixin:A,pl:runtimedistcleaner:A}
    at net.minecraft.client.color.block.BlockColors.m_92574_(BlockColors.java:51) ~[client-1.20.1-20230612.114412-srg.jar%23820!/:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:APP:rubidium.mixins.json:core.model.colors.BlockColorsMixin,pl:mixin:APP:aoa3.mixins.json:client.accessor.BlockColorsAccessor,pl:mixin:APP:puzzleslib.forge.mixins.json:client.accessor.BlockColorsForgeAccessor,pl:mixin:APP:aether.mixins.json:client.accessor.BlockColorsAccessor,pl:mixin:APP:snifferplus.mixins.json:MixinBlockColors,pl:mixin:A,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft.<init>(Minecraft.java:485) ~[client-1.20.1-20230612.114412-srg.jar%23820!/:?] {re:mixin,pl:accesstransformer:B,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick_render_call,pl:runtimedistcleaner:A,re:mixin,pl:accesstransformer:B,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick_render_call,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick,xf:fml:xaeroworldmap:xaero_wm_minecraft_runtick_render_call,pl:mixin:A,pl:runtimedistcleaner:A}

Could be an issue with Rubidium, AoA3, Puzzles Lib, Aether or SnifferPlus.

If the error remains after removing these Mods, post debug.log from the logs folder.
Note, in some launchers you need to enable the debug.log.

Caused by: java.lang.NullPointerException: Cannot find mod container for id snifferplus
at com.helliongames.snifferplus.registration.ForgeRegistrationFactory.create(ForgeRegistrationFactory.java:24) ~[Sniffer+-forge-1.20.1-0.2.0.jar%23752!/:0.2.0] {re:classloading}

 

Sniffer+-forge-1.20.1-0.2.0.jar is still there