It doesn't start when Fabritone is installed.

Note Baritone is a Minecraft AI based bot that can auto build/break, walk etc. I don't see this as a creative project rather than something like a hacked client!
Example:
https://www.youtube.com/watch?v=4m4hFel4q1c

Error:
[16:46:36] [main/INFO]: Loading for game Minecraft 1.16.4 [16:46:37] [main/INFO]: [FabricLoader] Loading 12 mods: [email protected], [email protected], [email protected], java@8, [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected]+12a8474c34, [email protected] [16:46:37] [main/INFO]: SpongePowered MIXIN Subsystem Version=0.8.2 Source=file:/C:/Program%20Files%20(x86)/MultiMC/libraries/net/fabricmc/sponge-mixin/0.8.2+build.24/sponge-mixin-0.8.2+build.24.jar Service=Knot/Fabric Env=CLIENT [16:46:49] [main/WARN]: @Redirect conflict. Skipping randompatches.mixins.json:client.keybindings.ClientPlayerEntityMixin->@Redirect::isSprintKeyDown(Lnet/minecraft/class_304;)Z with priority 1000, already redirected by mixins.baritone.json:MixinClientPlayerEntity->@Redirect::isKeyDown(Lnet/minecraft/class_304;)Z with priority 1000 [16:46:49] [main/WARN]: @Redirect conflict. Skipping randompatches.mixins.json:client.keybindings.ClientPlayerEntityMixin->@Redirect::isSprintKeyDown(Lnet/minecraft/class_304;)Z with priority 1000, already redirected by mixins.baritone.json:MixinClientPlayerEntity->@Redirect::isKeyDown(Lnet/minecraft/class_304;)Z with priority 1000 [16:46:49] [main/WARN]: @Redirect conflict. Skipping randompatches.mixins.json:client.keybindings.ClientPlayerEntityMixin->@Redirect::isSprintKeyDown(Lnet/minecraft/class_304;)Z with priority 1000, already redirected by mixins.baritone.json:MixinClientPlayerEntity->@Redirect::isKeyDown(Lnet/minecraft/class_304;)Z with priority 1000 [16:46:49] [main/WARN]: @Redirect conflict. Skipping randompatches.mixins.json:client.keybindings.ClientPlayerEntityMixin->@Redirect::isSprintKeyDown(Lnet/minecraft/class_304;)Z with priority 1000, already redirected by mixins.baritone.json:MixinClientPlayerEntity->@Redirect::isKeyDown(Lnet/minecraft/class_304;)Z with priority 1000 [16:46:49] [main/INFO]: [STDERR]: Failed to start Minecraft: [16:46:49] [main/INFO]: [STDERR]: java.lang.reflect.InvocationTargetException [16:46:49] [main/INFO]: [STDERR]: at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [16:46:49] [main/INFO]: [STDERR]: at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) [16:46:49] [main/INFO]: [STDERR]: at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) [16:46:49] [main/INFO]: [STDERR]: at java.lang.reflect.Method.invoke(Unknown Source) [16:46:49] [main/INFO]: [STDERR]: at org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:196) [16:46:49] [main/INFO]: [STDERR]: at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:231) [16:46:49] [main/INFO]: [STDERR]: at org.multimc.EntryPoint.listen(EntryPoint.java:143) [16:46:49] [main/INFO]: [STDERR]: at org.multimc.EntryPoint.main(EntryPoint.java:34) [16:46:49] [main/INFO]: [STDERR]: Caused by: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException [16:46:49] [main/INFO]: [STDERR]: at net.fabricmc.loader.game.MinecraftGameProvider.launch(MinecraftGameProvider.java:228) [16:46:49] [main/INFO]: [STDERR]: at net.fabricmc.loader.launch.knot.Knot.init(Knot.java:139) [16:46:49] [main/INFO]: [STDERR]: at net.fabricmc.loader.launch.knot.KnotClient.main(KnotClient.java:27) [16:46:49] [main/INFO]: [STDERR]: ... 8 more [16:46:49] [main/INFO]: [STDERR]: Caused by: java.lang.reflect.InvocationTargetException [16:46:49] [main/INFO]: [STDERR]: at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [16:46:49] [main/INFO]: [STDERR]: at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) [16:46:49] [main/INFO]: [STDERR]: at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) [16:46:49] [main/INFO]: [STDERR]: at java.lang.reflect.Method.invoke(Unknown Source) [16:46:49] [main/INFO]: [STDERR]: at net.fabricmc.loader.game.MinecraftGameProvider.launch(MinecraftGameProvider.java:226) [16:46:49] [main/INFO]: [STDERR]: ... 10 more [16:46:49] [main/INFO]: [STDERR]: Caused by: org.spongepowered.asm.mixin.transformer.throwables.MixinTransformerError: An unexpected critical error was encountered [16:46:50] [main/INFO]: [STDERR]: at org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:363) [16:46:50] [main/INFO]: [STDERR]: at org.spongepowered.asm.mixin.transformer.MixinTransformer.transformClass(MixinTransformer.java:208) [16:46:50] [main/INFO]: [STDERR]: at org.spongepowered.asm.mixin.transformer.MixinTransformer.transformClassBytes(MixinTransformer.java:178) [16:46:50] [main/INFO]: [STDERR]: at org.spongepowered.asm.mixin.transformer.FabricMixinTransformerProxy.transformClassBytes(FabricMixinTransformerProxy.java:23) [16:46:50] [main/INFO]: [STDERR]: at net.fabricmc.loader.launch.knot.KnotClassDelegate.getPostMixinClassByteArray(KnotClassDelegate.java:157) [16:46:50] [main/INFO]: [STDERR]: at net.fabricmc.loader.launch.knot.KnotClassLoader.loadClass(KnotClassLoader.java:150) [16:46:50] [main/INFO]: [STDERR]: at java.lang.ClassLoader.loadClass(Unknown Source) [16:46:50] [main/INFO]: [STDERR]: at net.minecraft.client.main.Main.main(Main.java:185) [16:46:50] [main/INFO]: [STDERR]: ... 15 more [16:46:50] [main/INFO]: [STDERR]: Caused by: org.spongepowered.asm.mixin.injection.throwables.InjectionError: Critical injection failure: Redirector isSprintKeyDown(Lnet/minecraft/class_304;)Z in randompatches.mixins.json:client.keybindings.ClientPlayerEntityMixin failed injection check, (0/1) succeeded. Scanned 1 target(s). Using refmap randompatches-refmap.json [16:46:50] [main/INFO]: [STDERR]: at org.spongepowered.asm.mixin.injection.struct.InjectionInfo.postInject(InjectionInfo.java:408) [16:46:50] [main/INFO]: [STDERR]: at org.spongepowered.asm.mixin.transformer.MixinTargetContext.applyInjections(MixinTargetContext.java:1291) [16:46:50] [main/INFO]: [STDERR]: at org.spongepowered.asm.mixin.transformer.MixinApplicatorStandard.applyInjections(MixinApplicatorStandard.java:1042) [16:46:50] [main/INFO]: [STDERR]: at org.spongepowered.asm.mixin.transformer.MixinApplicatorStandard.applyMixin(MixinApplicatorStandard.java:395) [16:46:50] [main/INFO]: [STDERR]: at org.spongepowered.asm.mixin.transformer.MixinApplicatorStandard.apply(MixinApplicatorStandard.java:320) [16:46:50] [main/INFO]: [STDERR]: at org.spongepowered.asm.mixin.transformer.TargetClassContext.applyMixins(TargetClassContext.java:345) [16:46:50] [main/INFO]: [STDERR]: at org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:569) [16:46:50] [main/INFO]: [STDERR]: at org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:351) [16:46:50] [main/INFO]: [STDERR]: ... 22 more [16:46:50] [main/INFO]: [STDOUT]: Exiting with -1 2021-01-29 16:46:50,348 Client Shutdown Thread WARN Unable to register Log4j shutdown hook because JVM is shutting down. Using SimpleLogger

bdw I don't know how to add labels like "bug"

Nah, only I can add labels. 😉