I tried playing the 1.21.7 version and it refuses to work at all!

I download and add the mod into the Forge Installation's "mod" folder, like I do with every other mod. when I start the game, it just crashes and shuts down. I can't even get to the main menu. I just get kicked to the launcher and an error message saying the following:

"An unexpected issue has occurred and the game has crashed. We're sorry for the inconvenience.
Crash dump sent!
Error Code:1"

What gives?? Why does this keep happening!?

Please post your minecraft log

I have the same issue.

Using Minecraft 1.21.7 and tried all available Forge Versions for this minecraft version. It is always just crashing with exit code 1.

Here is my log:

20:32:44.266
game
[20:32:44] [main/INFO] [mixin/]: SpongePowered MIXIN Subsystem Version=0.8.7 Source=jar:file:///C:/Users/admin/AppData/Roaming/.minecraft/libraries/org/spongepowered/mixin/0.8.7/mixin-0.8.7.jar!/ Service=ModLauncher Env=CLIENT
20:32:44.498
game
[20:32:44] [EarlyDisplay/INFO] [EARLYDISPLAY/]: GL info: NVIDIA GeForce RTX 2070 SUPER/PCIe/SSE2 GL version 4.6.0 NVIDIA 561.09, NVIDIA Corporation
20:32:44.730
game
[20:32:44] [main/INFO] [ne.mi.fm.lo.mo.JarInJarDependencyLocator/]: Found 2 dependencies adding them to mods collection
20:32:45.454
game
[20:32:45] [main/INFO] [mixin/]: Compatibility level set to JAVA_17
20:32:45.456
game
Exception in thread "main" java.lang.reflect.InvocationTargetException
20:32:45.457
game
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:118)
20:32:45.457
game
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
20:32:45.457
game
at net.minecraftforge.bootstrap.Bootstrap.bootstrapMain(Bootstrap.java:133)
20:32:45.457
game
at net.minecraftforge.bootstrap.Bootstrap.start(Bootstrap.java:53)
20:32:45.457
game
at net.minecraftforge.bootstrap.ForgeBootstrap.main(ForgeBootstrap.java:19)
20:32:45.457
game
Caused by: org.spongepowered.asm.launch.MixinInitialisationError: Error initialising mixin config cpm.shared.mixins.json
20:32:45.457
game
at SECURE-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.Config.create(Config.java:168)
20:32:45.457
game
at SECURE-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.Mixins.createConfiguration(Mixins.java:121)
20:32:45.457
game
at SECURE-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.Mixins.addConfiguration(Mixins.java:108)
20:32:45.457
game
at SECURE-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.launch.platform.MixinPlatformManager.addConfig(MixinPlatformManager.java:263)
20:32:45.457
game
at SECURE-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.launch.platform.MixinPlatformAgentDefault.prepare(MixinPlatformAgentDefault.java:46)
20:32:45.457
game
at SECURE-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.launch.platform.MixinContainer.prepare(MixinContainer.java:122)
20:32:45.457
game
at SECURE-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.launch.platform.MixinPlatformManager.createContainerFor(MixinPlatformManager.java:145)
20:32:45.457
game
at SECURE-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.launch.platform.MixinPlatformManager.addContainer(MixinPlatformManager.java:135)
20:32:45.457
game
at SECURE-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.launch.platform.MixinPlatformManager.addNestedContainers(MixinPlatformManager.java:153)
20:32:45.457
game
at SECURE-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.launch.platform.MixinPlatformManager.scanForContainers(MixinPlatformManager.java:214)
20:32:45.457
game
at SECURE-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.launch.platform.MixinPlatformManager.inject(MixinPlatformManager.java:187)
20:32:45.457
game
at SECURE-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.launch.MixinBootstrap.inject(MixinBootstrap.java:202)
20:32:45.457
game
at SECURE-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.launch.MixinLaunchPluginLegacy.initializeLaunch(MixinLaunchPluginLegacy.java:201)
20:32:45.457
game
at SECURE-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.launch.MixinLaunchPlugin.initializeLaunch(MixinLaunchPlugin.java:34)
20:32:45.457
game
at SECURE-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.LaunchPluginHandler.lambda$announceLaunch$6(LaunchPluginHandler.java:107)
20:32:45.457
game
at java.base/java.util.HashMap.forEach(HashMap.java:1430)
20:32:45.457
game
at SECURE-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.LaunchPluginHandler.announceLaunch(LaunchPluginHandler.java:106)
20:32:45.457
game
at SECURE-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:56)
20:32:45.457
game
at SECURE-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:97)
20:32:45.457
game
at SECURE-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.Launcher.run(Launcher.java:116)
20:32:45.457
game
at SECURE-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.Launcher.main(Launcher.java:75)
20:32:45.457
game
at SECURE-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.BootstrapEntry.main(BootstrapEntry.java:17)
20:32:45.457
game
at [email protected]/net.minecraftforge.bootstrap.Bootstrap.moduleMain(Bootstrap.java:188)
20:32:45.457
game
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
20:32:45.457
game
... 4 more
20:32:45.457
game
Caused by: java.lang.IllegalArgumentException: The specified resource 'cpm.shared.mixins.json' was invalid or could not be read
20:32:45.457
game
at SECURE-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.MixinConfig.create(MixinConfig.java:1388)
20:32:45.457
game
at SECURE-BOOTSTRAP/org.spongepowered.mixin/org.spongepowered.asm.mixin.transformer.Config.create(Config.java:163)
20:32:45.457
game
... 27 more
20:32:45.629
monitor
Process Monitor
Process crashed with exit code 1

i have the same issue

2025-07-01-4.log