Again, another crash! >:(
---- Minecraft Crash Report ----
// Hi. I'm Minecraft, and I'm a crashaholic.

Time: 10/31/20 5:55 PM
Description: mouseClicked event handler

org.spongepowered.asm.mixin.transformer.throwables.MixinTransformerError: An unexpected critical error was encountered
at org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:363)
at org.spongepowered.asm.mixin.transformer.MixinTransformer.transformClass(MixinTransformer.java:208)
at org.spongepowered.asm.mixin.transformer.MixinTransformer.transformClassBytes(MixinTransformer.java:178)
at org.spongepowered.asm.mixin.transformer.FabricMixinTransformerProxy.transformClassBytes(FabricMixinTransformerProxy.java:23)
at net.fabricmc.loader.launch.knot.KnotClassDelegate.getPostMixinClassByteArray(KnotClassDelegate.java:157)
at net.fabricmc.loader.launch.knot.KnotClassLoader.loadClass(KnotClassLoader.java:150)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at net.minecraft.class_442.method_19863(class_442.java:156)
at net.minecraft.class_442$$Lambda$3369/1969963594.onPress(Unknown Source)
at net.minecraft.class_4185.method_25306(class_4185.java:33)
at net.minecraft.class_4264.method_25348(class_4264.java:16)
at net.minecraft.class_339.method_25402(class_339.java:149)
at net.minecraft.class_4069.method_25402(class_4069.java:27)
at net.minecraft.class_442.method_25402(class_442.java:418)
at net.minecraft.class_312.method_1611(class_312.java:92)
at net.minecraft.class_312$$Lambda$3783/677947523.run(Unknown Source)
at net.minecraft.class_437.method_25412(class_437.java:435)
at net.minecraft.class_312.method_1601(class_312.java:92)
at net.minecraft.class_312.method_22686(class_312.java:162)
at net.minecraft.class_312$$Lambda$3748/1310072641.run(Unknown Source)
at net.minecraft.class_1255.execute(class_1255.java:104)
at net.minecraft.class_312.method_22684(class_312.java:162)
at net.minecraft.class_312$$Lambda$3084/1177087081.invoke(Unknown Source)
at org.lwjgl.glfw.GLFWMouseButtonCallbackI.callback(GLFWMouseButtonCallbackI.java:36)
at org.lwjgl.system.JNI.invokeV(Native Method)
at org.lwjgl.glfw.GLFW.glfwWaitEventsTimeout(GLFW.java:3174)
at com.mojang.blaze3d.systems.RenderSystem.limitDisplayFPS(RenderSystem.java:127)
at net.minecraft.class_310.method_1523(class_310.java:1046)
at net.minecraft.class_310.method_1514(class_310.java:656)
at net.minecraft.client.main.Main.main(Main.java:215)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at net.fabricmc.loader.game.MinecraftGameProvider.launch(MinecraftGameProvider.java:224)
at net.fabricmc.loader.launch.knot.Knot.init(Knot.java:140)
at net.fabricmc.loader.launch.knot.KnotClient.main(KnotClient.java:26)
Caused by: org.spongepowered.asm.mixin.throwables.MixinApplyError: Mixin [soaring-clouds.mixins.json:VideoOptionsScreenMixin] from phase [DEFAULT] in config [soaring-clouds.mixins.json] FAILED during APPLY
at org.spongepowered.asm.mixin.transformer.MixinProcessor.handleMixinError(MixinProcessor.java:642)
at org.spongepowered.asm.mixin.transformer.MixinProcessor.handleMixinApplyError(MixinProcessor.java:594)
at org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:356)
... 36 more
Caused by: org.spongepowered.asm.mixin.transformer.throwables.InvalidMixinException: @shadow field field_2639 was not located in the target class net.minecraft.class_446. Using refmap soaring-clouds-refmap.json
at org.spongepowered.asm.mixin.transformer.MixinPreProcessorStandard.attachFields(MixinPreProcessorStandard.java:610)
at org.spongepowered.asm.mixin.transformer.MixinPreProcessorStandard.attach(MixinPreProcessorStandard.java:289)
at org.spongepowered.asm.mixin.transformer.MixinPreProcessorStandard.createContextFor(MixinPreProcessorStandard.java:264)
at org.spongepowered.asm.mixin.transformer.MixinInfo.createContextFor(MixinInfo.java:1272)
at org.spongepowered.asm.mixin.transformer.MixinApplicatorStandard.apply(MixinApplicatorStandard.java:287)
at org.spongepowered.asm.mixin.transformer.TargetClassContext.applyMixins(TargetClassContext.java:345)
at org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:569)
at org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:351)
... 36 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:363)
at org.spongepowered.asm.mixin.transformer.MixinTransformer.transformClass(MixinTransformer.java:208)
at org.spongepowered.asm.mixin.transformer.MixinTransformer.transformClassBytes(MixinTransformer.java:178)
at org.spongepowered.asm.mixin.transformer.FabricMixinTransformerProxy.transformClassBytes(FabricMixinTransformerProxy.java:23)
at net.fabricmc.loader.launch.knot.KnotClassDelegate.getPostMixinClassByteArray(KnotClassDelegate.java:157)
at net.fabricmc.loader.launch.knot.KnotClassLoader.loadClass(KnotClassLoader.java:150)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at net.minecraft.class_442.method_19863(class_442.java:156)
at net.minecraft.class_442$$Lambda$3369/1969963594.onPress(Unknown Source)
at net.minecraft.class_4185.method_25306(class_4185.java:33)
at net.minecraft.class_4264.method_25348(class_4264.java:16)
at net.minecraft.class_339.method_25402(class_339.java:149)
at net.minecraft.class_4069.method_25402(class_4069.java:27)

-- OptiFabric --
Details:
OptiFine jar designed for: 1.16.3
OptiFine jar version: OptiFine_1.16.3_HD_U_G4_pre2
OptiFine jar status: Valid OptiFine installer
OptiFine remapped jar: C:\Users\vinny.DESKTOP-HD3PDS0\OneDrive\Desktop\Minecraft\OptiFabric 1.16.optifine\OptiFine_1.16.3_HD_U_G4_pre2\Optifine-mapped.jar
OptiFabric error:
Stacktrace:
at net.minecraft.class_128.handler$zcn000$fillSystemDetails(class_128.java:523)
at net.minecraft.class_128.(class_128.java:55)
at net.minecraft.class_128.method_560(class_128.java:417)
at net.minecraft.class_437.method_25412(class_437.java:437)
at net.minecraft.class_312.method_1601(class_312.java:92)
at net.minecraft.class_312.method_22686(class_312.java:162)
at net.minecraft.class_312$$Lambda$3748/1310072641.run(Unknown Source)
at net.minecraft.class_1255.execute(class_1255.java:104)
at net.minecraft.class_312.method_22684(class_312.java:162)
at net.minecraft.class_312$$Lambda$3084/1177087081.invoke(Unknown Source)
at org.lwjgl.glfw.GLFWMouseButtonCallbackI.callback(GLFWMouseButtonCallbackI.java:36)
at org.lwjgl.system.JNI.invokeV(Native Method)
at org.lwjgl.glfw.GLFW.glfwWaitEventsTimeout(GLFW.java:3174)
at com.mojang.blaze3d.systems.RenderSystem.limitDisplayFPS(RenderSystem.java:127)
at net.minecraft.class_310.method_1523(class_310.java:1046)
at net.minecraft.class_310.method_1514(class_310.java:656)
at net.minecraft.client.main.Main.main(Main.java:215)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at net.fabricmc.loader.game.MinecraftGameProvider.launch(MinecraftGameProvider.java:224)
at net.fabricmc.loader.launch.knot.Knot.init(Knot.java:140)
at net.fabricmc.loader.launch.knot.KnotClient.main(KnotClient.java:26)

-- Affected screen --
Details:
Screen name: net.minecraft.class_442

-- System Details --
Details:
Minecraft Version: 1.16.3
Minecraft Version ID: 1.16.3
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 1264500096 bytes (1205 MB) / 2315255808 bytes (2208 MB) up to 3221225472 bytes (3072 MB)
CPUs: 4
JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx3G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
Fabric Mods:
adorn: Adorn 1.11.1+1.16.3
angerable-patch: Angerable Patch 1.0.0-1.16.1
artifice: Artifice 0.13.2+1.16.3
autoconfig1u: Auto Config v1 Updated 3.2.2
betterslabs: Betterslabs 1.1.1
campanion: Campanion 1.2.0+build.39
cloth-basic-math: Cloth Basic Math 0.5.1
cloth-config2: Cloth Config v4 4.8.1
cobbletable: Cobblestone Crafting Table 1.0.0
connectiblechains: Connectible Chains 1.0.1
crumbs: Crumbs 1.0.1+1.16.3-fabric
decorative: Decorative 3.0.0
fabric: Fabric API 0.24.3+build.414-1.16
fabric-api-base: Fabric API Base 0.2.0+9f0fb4b895
fabric-biome-api-v1: Fabric Biome API (v1) 2.0.0+c29459ab95
fabric-blockrenderlayer-v1: Fabric BlockRenderLayer Registration (v1) 1.1.4+c6a8ea8995
fabric-command-api-v1: Fabric Command API (v1) 1.0.9+a4467d2a95
fabric-commands-v0: Fabric Commands (v0) 0.2.0+52d3083695
fabric-containers-v0: Fabric Containers (v0) 0.1.8+045df74f95
fabric-content-registries-v0: Fabric Content Registries (v0) 0.1.9+059ea86695
fabric-crash-report-info-v1: Fabric Crash Report Info (v1) 0.1.2+b7f9825d95
fabric-events-interaction-v0: Fabric Events Interaction (v0) 0.4.1+f8ac1db295
fabric-events-lifecycle-v0: Fabric Events Lifecycle (v0) 0.2.0+16acbe5b95
fabric-game-rule-api-v1: Fabric Game Rule API (v1) 1.0.3+a4467d2a95
fabric-item-api-v1: Fabric Item API (v1) 1.2.0+f8ac1db295
fabric-item-groups-v0: Fabric Item Groups (v0) 0.2.1+a4467d2a95
fabric-key-binding-api-v1: Fabric Key Binding API (v1) 1.0.1+730711c695
fabric-keybindings-v0: Fabric Key Bindings (v0) 0.2.0+3fa9f7c595
fabric-language-kotlin: Fabric Language Kotlin 1.4.0+build.1
fabric-lifecycle-events-v1: Fabric Lifecycle Events (v1) 1.2.0+74cc3b2095
fabric-loot-tables-v1: Fabric Loot Tables (v1) 1.0.1+432ea18895
fabric-mining-levels-v0: Fabric Mining Levels (v0) 0.1.2+b764ce9995
fabric-models-v0: Fabric Models (v0) 0.1.1+f8ac1db295
fabric-networking-blockentity-v0: Fabric Networking Block Entity (v0) 0.2.5+b50ffc7b95
fabric-networking-v0: Fabric Networking (v0) 0.1.10+e00ecb5f95
fabric-object-builder-api-v1: Fabric Object Builder API (v1) 1.9.2+a89534ab95
fabric-object-builders-v0: Fabric Object Builders (v0) 0.7.1+a4467d2a95
fabric-particles-v1: fabric-particles-v1 0.2.2+fb0d9b0e95
fabric-registry-sync-v0: Fabric Registry Sync (v0) 0.6.1+a4467d2a95
fabric-renderer-api-v1: Fabric Renderer API (v1) 0.3.3+a4467d2a95
fabric-renderer-indigo: Fabric Renderer - Indigo 0.4.3+a4467d2a95
fabric-renderer-registries-v1: Fabric Renderer Registries (v1) 2.2.0+f8ac1db295
fabric-rendering-data-attachment-v1: Fabric Rendering Data Attachment (v1) 0.1.4+f8ac1db295
fabric-rendering-fluids-v1: Fabric Rendering Fluids (v1) 0.1.12+f8ac1db295
fabric-rendering-v0: Fabric Rendering (v0) 1.1.1+f8ac1db295
fabric-rendering-v1: Fabric Rendering (v1) 1.3.1+f8ac1db295
fabric-resource-loader-v0: Fabric Resource Loader (v0) 0.3.1+facf3bbf95
fabric-screen-handler-api-v1: Fabric Screen Handler API (v1) 1.1.0+8724984195
fabric-structure-api-v1: Fabric Structure API (v1) 1.1.0+f8ac1db295
fabric-tag-extensions-v0: Fabric Tag Extensions (v0) 1.0.3+ac8e8c5995
fabric-textures-v0: Fabric Textures (v0) 1.0.5+a4467d2a95
fabric-tool-attribute-api-v1: Fabric Tool Attribute API (v1) 1.2.4+2b46237995
fabricloader: Fabric Loader 0.10.5+build.213
jankson: Jankson 3.0.1+j1.2.0
kirin: Kirin UI 1.7-1.16.2
libcd: LibCapableData 3.0.3+1.16.3
libgui: LibGui 3.0.0+1.16.3
midnight-hats: Midnight Hats 1.0.2
minecraft: Minecraft 1.16.3
mm: Manningham Mills 2.1
modmenu: Mod Menu 1.14.6+build.31
optifabric: OptiFabric 1.7.0
org_jetbrains_annotations: annotations 20.0.0
org_jetbrains_kotlin_kotlin-reflect: kotlin-reflect 1.4.0
org_jetbrains_kotlin_kotlin-stdlib: kotlin-stdlib 1.4.0
org_jetbrains_kotlin_kotlin-stdlib-jdk7: kotlin-stdlib-jdk7 1.4.0
org_jetbrains_kotlin_kotlin-stdlib-jdk8: kotlin-stdlib-jdk8 1.4.0
org_jetbrains_kotlinx_kotlinx-coroutines-jdk8: kotlinx-coroutines-jdk8 1.3.9
pling: Pling 1.2.0
presencefootsteps: Presence Footsteps r28+1.16.2
reach-entity-attributes: Reach Entity Attribute 1.0.1
repurposed_structures: Repurposed Structures 1.16.3-1.6.9
rocks: This Rocks! 1.0.0
simplexterrain: Simplex Terrain 0.7.0
soaring-clouds: Soaring Clouds 1.2.0-1.16
statement: Statement 4.0.0+1.16.2
voyager: Voyager 1.0.0
woods_and_mires: Woods and Mires 1.0.2+1.16.3
worldedit: WorldEdit 7.2.0-rc2+a615e01
Launched Version: fabric-loader-0.10.5+build.213-1.16.3
Backend library: LWJGL version 3.2.2 build 10
Backend API: AMD Radeon(TM) Vega 3 Graphics GL version 4.6.13547 Compatibility Profile Context 25.20.15030.4, ATI Technologies Inc.
GL Caps: Using framebuffer using OpenGL 3.0
Using VBOs: Yes
Is Modded: Definitely; Client brand changed to 'fabric'
Type: Client (map_client.txt)
Graphics mode: fabulous
Resource Packs: vanilla, fabric/fabric-renderer-api-v1, fabric/fabric-keybindings-v0, fabric/libcd, fabric/fabricloader, fabric/connectiblechains, fabric/fabric-containers-v0, fabric/fabric-object-builder-api-v1, fabric/fabric-game-rule-api-v1, fabric/fabric-api-base, fabric/fabric-rendering-data-attachment-v1, fabric/campanion, fabric/fabric-textures-v0, fabric/fabric-rendering-fluids-v1, fabric/decorative, fabric/simplexterrain, fabric/fabric-blockrenderlayer-v1, fabric/fabric-lifecycle-events-v1, fabric/soaring-clouds, fabric/fabric-renderer-registries-v1, fabric/fabric-loot-tables-v1, fabric/crumbs, fabric/fabric, fabric/pling, fabric/fabric-networking-v0, fabric/fabric-screen-handler-api-v1, fabric/fabric-networking-blockentity-v0, fabric/repurposed_structures, fabric/modmenu, fabric/jankson, fabric/fabric-command-api-v1, fabric/woods_and_mires, fabric/fabric-tool-attribute-api-v1, fabric/fabric-renderer-indigo, fabric/midnight-hats, fabric/fabric-crash-report-info-v1, fabric/fabric-events-interaction-v0, fabric/fabric-item-api-v1, fabric/rocks, fabric/libgui, fabric/fabric-language-kotlin, fabric/fabric-rendering-v0, fabric/fabric-key-binding-api-v1, fabric/fabric-rendering-v1, fabric/cloth-config2, fabric/autoconfig1u, fabric/fabric-resource-loader-v0, fabric/fabric-content-registries-v0, fabric/fabric-tag-extensions-v0, fabric/fabric-biome-api-v1, fabric/fabric-registry-sync-v0, fabric/adorn, fabric/cobbletable, fabric/fabric-mining-levels-v0, fabric/fabric-events-lifecycle-v0, fabric/fabric-item-groups-v0, fabric/fabric-models-v0, fabric/fabric-object-builders-v0, fabric/presencefootsteps (incompatible), fabric/reach-entity-attributes (incompatible), fabric/worldedit (incompatible), file/Custom font 1.16
Current Language: English (US)
CPU: 4x AMD Ryzen 3 2200U with Radeon Vega Mobile Gfx
OptiFine Version: OptiFine_1.16.3_HD_U_G4_pre2
OptiFine Build: 20201007-190609
Render Distance Chunks: 7
Mipmaps: 4
Anisotropic Filtering: 1
Antialiasing: 0
Multitexture: false
Shaders: null
OpenGlVersion: 4.6.13547 Compatibility Profile Context 25.20.15030.4
OpenGlRenderer: AMD Radeon(TM) Vega 3 Graphics
OpenGlVendor: ATI Technologies Inc.
CpuCount: 4

I really want optifine with fabric, and I want to use CIT packs in it, but for some reason it crashes even when I click on the options button

Remove 'Soaring Clouds' mod and try again.

okay. thanks