this is the error im getting when trying to open minecraft (also i use sklauncher to play minecraft bc on brazil minecraft is too expensive, don't know if this changes the code or something)
[20:38:48] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker
[20:38:48] [main/INFO] [LaunchWrapper]: Using primary tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker
[20:38:48] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLTweaker
[20:38:48] [main/INFO] [FML]: Forge Mod Loader version 14.23.5.2854 for Minecraft 1.12.2 loading
[20:38:48] [main/INFO] [FML]: Java is Java HotSpot(TM) Client VM, version 1.8.0_261, running on Windows 10:x86:10.0, installed at C:\Program Files (x86)\Java\jre1.8.0_261
[20:38:50] [main/INFO] [FML]: Searching C:\Users\mylit\AppData\Roaming\.minecraft\mods for mods
[20:38:50] [main/WARN] [FML]: Found FMLCorePluginContainsFMLMod marker in BetterFoliage-MC1.12-2.3.1.jar. This is not recommended, @Mods should be in a separate jar from the coremod.
[20:38:50] [main/WARN] [FML]: The coremod BetterFoliageLoader (mods.betterfoliage.loader.BetterFoliageLoader) is not signed!
[20:38:50] [main/INFO] [FML]: Loading tweaker guichaguri.betterfps.tweaker.BetterFpsTweaker from BetterFps-1.4.8.jar
[20:38:50] [main/WARN] [FML]: Found FMLCorePluginContainsFMLMod marker in iceandfire-1.9.1-1.12.2.jar. This is not recommended, @Mods should be in a separate jar from the coremod.
[20:38:50] [main/WARN] [FML]: The coremod iceandfire (com.github.alexthe666.iceandfire.asm.IceAndFirePlugin) is not signed!
[20:38:50] [main/INFO] [FML]: Loading tweaker optifine.OptiFineForgeTweaker from OptiFine_1.12.2_HD_U_F5.jar
[20:38:50] [main/WARN] [FML]: Found FMLCorePluginContainsFMLMod marker in Quark-r1.6-179.jar. This is not recommended, @Mods should be in a separate jar from the coremod.
[20:38:50] [main/WARN] [FML]: The coremod Quark Plugin (vazkii.quark.base.asm.LoadingPlugin) is not signed!
[20:38:50] [main/WARN] [FML]: Found FMLCorePluginContainsFMLMod marker in SereneSeasons-1.12.2-1.2.18-universal.jar. This is not recommended, @Mods should be in a separate jar from the coremod.
[20:38:50] [main/WARN] [FML]: The coremod sereneseasons.asm.SSLoadingPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[20:38:50] [main/WARN] [FML]: The coremod SSLoadingPlugin (sereneseasons.asm.SSLoadingPlugin) is not signed!
[20:38:50] [main/INFO] [FML]: Loading tweaker org.spongepowered.asm.launch.MixinTweaker from Surge-1.12.2-2.0.79.jar
[20:38:50] [main/INFO] [FML]: Loading tweaker org.spongepowered.asm.launch.MixinTweaker from VanillaFix-1.0.10-99.jar
[20:38:50] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker
[20:38:50] [main/INFO] [LaunchWrapper]: Loading tweak class name guichaguri.betterfps.tweaker.BetterFpsTweaker
[20:38:50] [main/INFO] [LaunchWrapper]: Loading tweak class name optifine.OptiFineForgeTweaker
[20:38:50] [main/INFO] [LaunchWrapper]: Loading tweak class name org.spongepowered.asm.launch.MixinTweaker
[20:38:50] [main/INFO] [mixin]: SpongePowered MIXIN Subsystem Version=0.8 Source=file:/C:/Users/mylit/AppData/Roaming/.minecraft/mods/Surge-1.12.2-2.0.79.jar Service=LaunchWrapper Env=CLIENT
[20:38:51] [main/INFO] [mixin]: Compatibility level set to JAVA_8
[20:38:51] [main/INFO] [VanillaFix]: Initializing VanillaFix
[20:38:51] [main/INFO] [VanillaFix]: Initializing StacktraceDeobfuscator
[20:38:51] [main/INFO] [VanillaFix]: Found MCP method mappings: methods-stable_39.csv
[20:38:51] [main/INFO] [VanillaFix]: Done initializing StacktraceDeobfuscator
[20:38:51] [main/INFO] [VanillaFix]: Initializing Bug Fix Mixins
[20:38:51] [main/INFO] [VanillaFix]: Initializing Crash Fix Mixins
[20:38:51] [main/INFO] [VanillaFix]: Initializing Profiler Improvement Mixins
[20:38:51] [main/INFO] [VanillaFix]: Initializing Texture Fix Mixins
[20:38:51] [main/INFO] [VanillaFix]: Initializing Mod Support Mixins
[20:38:51] [main/WARN] [FML]: The coremod VanillaFixLoadingPlugin (org.dimdev.vanillafix.VanillaFixLoadingPlugin) is not signed!
[20:38:51] [main/WARN] [LaunchWrapper]: Tweak class name org.spongepowered.asm.launch.MixinTweaker has already been visited -- skipping
[20:38:51] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLDeobfTweaker
[20:38:51] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker
[20:38:51] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker
[20:38:51] [main/INFO] [LaunchWrapper]: Calling tweak class optifine.OptiFineForgeTweaker
[20:38:51] [main/INFO] [STDOUT]: [optifine.OptiFineForgeTweaker:dbg:56]: OptiFineForgeTweaker: acceptOptions
[20:38:51] [main/INFO] [STDOUT]: [optifine.OptiFineForgeTweaker:dbg:56]: OptiFineForgeTweaker: injectIntoClassLoader
[20:38:51] [main/INFO] [STDOUT]: [optifine.OptiFineClassTransformer:dbg:242]: OptiFine ClassTransformer
[20:38:51] [main/INFO] [STDOUT]: [optifine.OptiFineClassTransformer:dbg:242]: OptiFine ZIP file: C:\Users\mylit\AppData\Roaming\.minecraft\mods\OptiFine_1.12.2_HD_U_F5.jar
[20:38:51] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
[20:38:55] [main/INFO] [FML]: Found valid fingerprint for Minecraft Forge. Certificate fingerprint e3c3d50c7c986df74c645c0ac54639741c90a557
[20:38:55] [main/INFO] [FML]: Found valid fingerprint for Minecraft. Certificate fingerprint cd99959656f753dc28d863b46769f7f8fbaefcfc
[20:38:55] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
[20:38:55] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
[20:38:55] [main/INFO] [LaunchWrapper]: Calling tweak class org.spongepowered.asm.launch.MixinTweaker
[20:38:55] [main/INFO] [mixin]: Initialised Mixin FML Remapper Adapter with net.minecraftforge.fml.common.asm.transformers.deobf.FMLDeobfuscatingRemapper@13fe06e
[20:38:55] [main/INFO] [LaunchWrapper]: Calling tweak class guichaguri.betterfps.tweaker.BetterFpsTweaker
[20:38:55] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLDeobfTweaker
[20:38:56] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
[20:38:56] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
Exception in thread "main" [20:38:56] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: java.lang.NoClassDefFoundError: com/github/alexthe666/iceandfire/patcher/IceAndFireRuntimePatcher
[20:38:56] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: at com.github.alexthe666.iceandfire.asm.IceAndFirePlugin.getASMTransformerClass(IceAndFirePlugin.java:18)
[20:38:56] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: at net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper.injectIntoClassLoader(CoreModManager.java:129)
[20:38:56] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: at net.minecraft.launchwrapper.Launch.launch(Launch.java:115)
[20:38:56] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
[20:38:56] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: Caused by: java.lang.ClassNotFoundException: com.github.alexthe666.iceandfire.patcher.IceAndFireRuntimePatcher
[20:38:56] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
[20:38:56] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: at java.lang.ClassLoader.loadClass(Unknown Source)
[20:38:56] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: at java.lang.ClassLoader.loadClass(Unknown Source)
[20:38:56] [main/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: ... 4 more
[20:38:56] [main/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: Caused by: java.lang.NoClassDefFoundError: net/ilexiconn/llibrary/server/asm/RuntimePatcher
[20:38:56] [main/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: at java.lang.ClassLoader.defineClass1(Native Method)
[20:38:56] [main/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: at java.lang.ClassLoader.defineClass(Unknown Source)
[20:38:56] [main/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: at java.security.SecureClassLoader.defineClass(Unknown Source)
[20:38:56] [main/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
[20:38:56] [main/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: ... 6 more
[20:38:56] [main/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: Caused by: java.lang.ClassNotFoundException: net.ilexiconn.llibrary.server.asm.RuntimePatcher
[20:38:56] [main/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:101)
[20:38:56] [main/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: at java.lang.ClassLoader.loadClass(Unknown Source)
[20:38:56] [main/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: at java.lang.ClassLoader.loadClass(Unknown Source)
[20:38:56] [main/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:-1]: ... 10 more