https://paste.ee/p/buUKo
Full log above can provide any additional info needed

Doesn't look like they're interested in making this work: MeteorDevelopment/meteor-client#524

In case wary of link:
MultiMC version: 0.6.12-1530

Minecraft folder is:
C:/Moveme/MultiMC/instances/Meteor New/.minecraft

Java path is:
C:/Program Files/Java/jre1.8.0_281/bin/javaw.exe

Checking Java version...
Java is version 1.8.0_281, using 64-bit architecture, from Oracle Corporation.

Main Class:
net.fabricmc.loader.launch.knot.KnotClient

Native path:
C:/Moveme/MultiMC/instances/Meteor New/natives

Traits:
traits FirstThreadOnMacOS
traits XR:Initial

Libraries:
C:/Moveme/MultiMC/libraries/org/lwjgl/lwjgl-glfw/3.2.2/lwjgl-glfw-3.2.2.jar
C:/Moveme/MultiMC/libraries/org/lwjgl/lwjgl-jemalloc/3.2.2/lwjgl-jemalloc-3.2.2.jar
C:/Moveme/MultiMC/libraries/org/lwjgl/lwjgl-openal/3.2.2/lwjgl-openal-3.2.2.jar
C:/Moveme/MultiMC/libraries/org/lwjgl/lwjgl-opengl/3.2.2/lwjgl-opengl-3.2.2.jar
C:/Moveme/MultiMC/libraries/org/lwjgl/lwjgl-stb/3.2.2/lwjgl-stb-3.2.2.jar
C:/Moveme/MultiMC/libraries/org/lwjgl/lwjgl-tinyfd/3.2.2/lwjgl-tinyfd-3.2.2.jar
C:/Moveme/MultiMC/libraries/org/lwjgl/lwjgl/3.2.2/lwjgl-3.2.2.jar
C:/Moveme/MultiMC/libraries/com/mojang/patchy/1.1/patchy-1.1.jar
C:/Moveme/MultiMC/libraries/oshi-project/oshi-core/1.1/oshi-core-1.1.jar
C:/Moveme/MultiMC/libraries/net/java/dev/jna/jna/4.4.0/jna-4.4.0.jar
C:/Moveme/MultiMC/libraries/net/java/dev/jna/platform/3.4.0/platform-3.4.0.jar
C:/Moveme/MultiMC/libraries/com/ibm/icu/icu4j/66.1/icu4j-66.1.jar
C:/Moveme/MultiMC/libraries/com/mojang/javabridge/1.0.22/javabridge-1.0.22.jar
C:/Moveme/MultiMC/libraries/net/sf/jopt-simple/jopt-simple/5.0.3/jopt-simple-5.0.3.jar
C:/Moveme/MultiMC/libraries/io/netty/netty-all/4.1.25.Final/netty-all-4.1.25.Final.jar
C:/Moveme/MultiMC/libraries/com/google/guava/guava/21.0/guava-21.0.jar
C:/Moveme/MultiMC/libraries/org/apache/commons/commons-lang3/3.5/commons-lang3-3.5.jar
C:/Moveme/MultiMC/libraries/commons-io/commons-io/2.5/commons-io-2.5.jar
C:/Moveme/MultiMC/libraries/commons-codec/commons-codec/1.10/commons-codec-1.10.jar
C:/Moveme/MultiMC/libraries/com/mojang/brigadier/1.0.17/brigadier-1.0.17.jar
C:/Moveme/MultiMC/libraries/com/mojang/datafixerupper/4.0.26/datafixerupper-4.0.26.jar
C:/Moveme/MultiMC/libraries/com/google/code/gson/gson/2.8.0/gson-2.8.0.jar
C:/Moveme/MultiMC/libraries/com/mojang/authlib/2.1.28/authlib-2.1.28.jar
C:/Moveme/MultiMC/libraries/org/apache/commons/commons-compress/1.8.1/commons-compress-1.8.1.jar
C:/Moveme/MultiMC/libraries/org/apache/httpcomponents/httpclient/4.3.3/httpclient-4.3.3.jar
C:/Moveme/MultiMC/libraries/commons-logging/commons-logging/1.1.3/commons-logging-1.1.3.jar
C:/Moveme/MultiMC/libraries/org/apache/httpcomponents/httpcore/4.3.2/httpcore-4.3.2.jar
C:/Moveme/MultiMC/libraries/it/unimi/dsi/fastutil/8.2.1/fastutil-8.2.1.jar
C:/Moveme/MultiMC/libraries/org/apache/logging/log4j/log4j-api/2.8.1/log4j-api-2.8.1.jar
C:/Moveme/MultiMC/libraries/org/apache/logging/log4j/log4j-core/2.8.1/log4j-core-2.8.1.jar
C:/Moveme/MultiMC/libraries/com/mojang/text2speech/1.11.3/text2speech-1.11.3.jar
C:/Moveme/MultiMC/libraries/net/fabricmc/intermediary/1.16.5/intermediary-1.16.5.jar
C:/Moveme/MultiMC/libraries/net/fabricmc/tiny-mappings-parser/0.2.2.14/tiny-mappings-parser-0.2.2.14.jar
C:/Moveme/MultiMC/libraries/net/fabricmc/sponge-mixin/0.9.2+mixin.0.8.2/sponge-mixin-0.9.2+mixin.0.8.2.jar
C:/Moveme/MultiMC/libraries/net/fabricmc/tiny-remapper/0.3.0.70/tiny-remapper-0.3.0.70.jar
C:/Moveme/MultiMC/libraries/net/fabricmc/access-widener/1.0.0/access-widener-1.0.0.jar
C:/Moveme/MultiMC/libraries/net/fabricmc/fabric-loader-sat4j/2.3.5.4/fabric-loader-sat4j-2.3.5.4.jar
C:/Moveme/MultiMC/libraries/com/google/jimfs/jimfs/1.2-fabric/jimfs-1.2-fabric.jar
C:/Moveme/MultiMC/libraries/org/ow2/asm/asm/9.1/asm-9.1.jar
C:/Moveme/MultiMC/libraries/org/ow2/asm/asm-analysis/9.1/asm-analysis-9.1.jar
C:/Moveme/MultiMC/libraries/org/ow2/asm/asm-commons/9.1/asm-commons-9.1.jar
C:/Moveme/MultiMC/libraries/org/ow2/asm/asm-tree/9.1/asm-tree-9.1.jar
C:/Moveme/MultiMC/libraries/org/ow2/asm/asm-util/9.1/asm-util-9.1.jar
C:/Moveme/MultiMC/libraries/net/fabricmc/fabric-loader/0.11.3/fabric-loader-0.11.3.jar
C:/Moveme/MultiMC/libraries/com/mojang/minecraft/1.16.5/minecraft-1.16.5-client.jar

Native libraries:
C:/Moveme/MultiMC/libraries/org/lwjgl/lwjgl-glfw/3.2.2/lwjgl-glfw-3.2.2-natives-windows.jar
C:/Moveme/MultiMC/libraries/org/lwjgl/lwjgl-jemalloc/3.2.2/lwjgl-jemalloc-3.2.2-natives-windows.jar
C:/Moveme/MultiMC/libraries/org/lwjgl/lwjgl-openal/3.2.2/lwjgl-openal-3.2.2-natives-windows.jar
C:/Moveme/MultiMC/libraries/org/lwjgl/lwjgl-opengl/3.2.2/lwjgl-opengl-3.2.2-natives-windows.jar
C:/Moveme/MultiMC/libraries/org/lwjgl/lwjgl-stb/3.2.2/lwjgl-stb-3.2.2-natives-windows.jar
C:/Moveme/MultiMC/libraries/org/lwjgl/lwjgl-tinyfd/3.2.2/lwjgl-tinyfd-3.2.2-natives-windows.jar
C:/Moveme/MultiMC/libraries/org/lwjgl/lwjgl/3.2.2/lwjgl-3.2.2-natives-windows.jar
C:/Moveme/MultiMC/libraries/com/mojang/text2speech/1.11.3/text2speech-1.11.3-natives-windows.jar

Mods:
[✔️] fabric-api-0.32.5+1.16
[✔️] fabricmod_VoxelMap-1.10.15_for_1.16.5
[✔️] meteor-client-0.4.2
[✔️] optifabric-1.9.6
[✔️] OptiFine_1.16.5_HD_U_G7_MOD

Params:
--username --version MultiMC5 --gameDir C:/Moveme/MultiMC/instances/Meteor New/.minecraft --assetsDir C:/Moveme/MultiMC/assets --assetIndex 1.16 --uuid --accessToken --userType --versionType release

Window size: 854 x 480

Java Arguments:
[-XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump, -Xms6400m, -Xmx12800m, -Duser.language=en]

Minecraft process ID: 20364

Using onesix launcher.

[11:38:22] [main/INFO]: Loading for game Minecraft 1.16.5
[11:38:22] [ForkJoinPool-1-worker-6/WARN]: Non-Fabric mod JAR at "C:\Moveme\MultiMC\instances\Meteor New.minecraft\mods\OptiFine_1.16.5_HD_U_G7_MOD.jar", ignoring
[11:38:22] [main/INFO]: [FabricLoader] Loading 52 mods: [email protected]+ca58154a7d, [email protected]+ca58154a7d, [email protected], [email protected]+ca58154a7d, [email protected]+9354966b7d, [email protected]+9354966b7d, [email protected]+9354966b7d, java@8, [email protected]+ca58154a7d, [email protected]+9354966b7d, [email protected], [email protected]+ca58154a7d, [email protected]+ca58154a7d, [email protected]+ca58154a7d, [email protected]+ca58154a7d, [email protected]+ca58154a7d, [email protected]+ca58154a7d, [email protected]+ca58154a7d, [email protected]+1.16, [email protected]+ca58154a7d, [email protected]+ca58154a7d, [email protected]+dc716ea17d, [email protected]+ca58154a7d, [email protected]+9354966b7d, [email protected], [email protected]+351679a77d, [email protected]+c045166c7d, [email protected]+ca58154a7d, [email protected]+ca58154a7d, [email protected]+ca58154a7d, [email protected]+ca58154a7d, [email protected]+ca58154a7d, [email protected]+ca58154a7d, [email protected]+ca58154a7d, [email protected]+9354966b7d, [email protected]+ca58154a7d, [email protected], [email protected]+ca58154a7d, [email protected]+ca58154a7d, [email protected]+ca58154a7d, [email protected]+ca58154a7d, [email protected], [email protected]+ca58154a7d, [email protected]+ca58154a7d, [email protected]+ca58154a7d, [email protected]+ca58154a7d, [email protected], [email protected]+ca58154a7d, [email protected], [email protected]+351679a77d, [email protected]+ca58154a7d, [email protected]+ca58154a7d
[11:38:23] [main/INFO]: SpongePowered MIXIN Subsystem Version=0.8.2 Source=file:/C:/Moveme/MultiMC/libraries/net/fabricmc/sponge-mixin/0.9.2+mixin.0.8.2/sponge-mixin-0.9.2+mixin.0.8.2.jar Service=Knot/Fabric Env=CLIENT
[11:38:24] [main/WARN]: Error loading class: me/jellysquid/mods/sodium/client/world/SodiumChunkManager (java.lang.ClassNotFoundException: me/jellysquid/mods/sodium/client/world/SodiumChunkManager)
[11:38:24] [main/WARN]: Error loading class: me/jellysquid/mods/sodium/client/util/collections/FixedLongHashTable (java.lang.ClassNotFoundException: me/jellysquid/mods/sodium/client/util/collections/FixedLongHashTable)
[11:38:24] [main/WARN]: Error loading class: me/jellysquid/mods/sodium/client/render/occlusion/BlockOcclusionCache (java.lang.ClassNotFoundException: me/jellysquid/mods/sodium/client/render/occlusion/BlockOcclusionCache)
[11:38:24] [main/WARN]: @mixin target me.jellysquid.mods.sodium.client.render.occlusion.BlockOcclusionCache was not found meteor-client-sodium.mixins.json:SodiumBlockOcculsionCacheMixin
[11:38:24] [main/WARN]: Error loading class: me/jellysquid/mods/sodium/client/render/pipeline/BlockRenderer (java.lang.ClassNotFoundException: me/jellysquid/mods/sodium/client/render/pipeline/BlockRenderer)
[11:38:24] [main/WARN]: @mixin target me.jellysquid.mods.sodium.client.render.pipeline.BlockRenderer was not found meteor-client-sodium.mixins.json:SodiumBlockRendererMixin
[11:38:24] [main/WARN]: Error loading class: me/jellysquid/mods/sodium/client/render/pipeline/FluidRenderer (java.lang.ClassNotFoundException: me/jellysquid/mods/sodium/client/render/pipeline/FluidRenderer)
[11:38:24] [main/WARN]: @mixin target me.jellysquid.mods.sodium.client.render.pipeline.FluidRenderer was not found meteor-client-sodium.mixins.json:SodiumFluidRendererMixin
Setting up optifine for the first time, this may take a few seconds.
De-Volderfiying jar
Finding lambdas to fix
Remapping optifine with fixed lambda names
Remapping optifine from official to intermediary
Found 308 patched classes
[11:38:36] [main/INFO]: [OptiFine] (Reflector) Field not found: World.tileEntitiesToBeRemoved
[11:38:36] [main/WARN]: Injection warning: LVT in net/minecraft/class_757::method_3188(FJLnet/minecraft/class_4587;)V has incompatible changes at opcode 486 in callback net/minecraft/class_757::onRenderWorld.
Expected: [Z, Lnet/minecraft/class_4184;, Lnet/minecraft/class_4587;, Lnet/minecraft/class_1159;]
Found: [Z, Lnet/minecraft/class_4184;, Lnet/minecraft/class_4587;]
Failed to start Minecraft:
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:196)
at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:231)
at org.multimc.EntryPoint.listen(EntryPoint.java:143)
at org.multimc.EntryPoint.main(EntryPoint.java:34)
Caused by: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at net.fabricmc.loader.game.MinecraftGameProvider.launch(MinecraftGameProvider.java:228)
at net.fabricmc.loader.launch.knot.Knot.launch(Knot.java:146)
at net.fabricmc.loader.launch.knot.KnotClient.main(KnotClient.java:28)
... 8 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.fabricmc.loader.game.MinecraftGameProvider.launch(MinecraftGameProvider.java:226)
... 10 more
Caused by: 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(Unknown Source)
at java.lang.Class.getDeclaredFields0(Native Method)
at java.lang.Class.privateGetDeclaredFields(Unknown Source)
at java.lang.Class.getDeclaredFields(Unknown Source)
at net.optifine.reflect.FieldLocatorTypes.(FieldLocatorTypes.java:25)
at net.optifine.reflect.Reflector.(Reflector.java:501)
at net.minecraft.class_128.method_559(class_128.java:101)
at net.minecraft.class_128.(class_128.java:54)
at net.minecraft.class_128.method_24305(class_128.java:425)
at net.minecraft.client.main.Main.main(Main.java:135)
... 15 more
Caused by: org.spongepowered.asm.mixin.injection.throwables.InjectionError: Critical injection failure: Callback method onRenderWorld(FJLnet/minecraft/class_4587;Lorg/spongepowered/asm/mixin/injection/callback/CallbackInfo;ZLnet/minecraft/class_4184;Lnet/minecraft/class_4587;Lnet/minecraft/class_1159;)V in meteor-client.mixins.json:GameRendererMixin failed injection check, (0/1) succeeded. Scanned 1 target(s). Using refmap meteor-client-refmap.json
at org.spongepowered.asm.mixin.injection.struct.InjectionInfo.postInject(InjectionInfo.java:408)
at org.spongepowered.asm.mixin.transformer.MixinTargetContext.applyInjections(MixinTargetContext.java:1291)
at org.spongepowered.asm.mixin.transformer.MixinApplicatorStandard.applyInjections(MixinApplicatorStandard.java:1042)
at org.spongepowered.asm.mixin.transformer.MixinApplicatorStandard.applyMixin(MixinApplicatorStandard.java:395)
at org.spongepowered.asm.mixin.transformer.MixinApplicatorStandard.apply(MixinApplicatorStandard.java:320)
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)
... 30 more
Exiting with -1
Process exited with code -1.
MultiMC: Log upload triggered at: 11 Apr 2021 11:40:10 -0800
MultiMC: Log uploaded to: https://paste.ee/p/buUKo

Is it maybe similar to #205