Just created a new 1.20.4 instance and cannot boot. Any solutions?

[R3Akefit]

Here is the log: https://paste.ee/p/2iQxG

Here is the error message: [main/ERROR]: Minecraft has crashed!
net.fabricmc.loader.impl.FormattedException: java.lang.IllegalArgumentException: Invalid UUID string:
at net.fabricmc.loader.impl.FormattedException.ofLocalized(FormattedException.java:63) ~[fabric-loader-0.15.7.jar:?]
at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:472) ~[fabric-loader-0.15.7.jar:?]
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74) ~[fabric-loader-0.15.7.jar:?]
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23) ~[fabric-loader-0.15.7.jar:?]
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?]
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?]
at org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:243) ~[NewLaunch.jar:?]
at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:278) ~[NewLaunch.jar:?]
at org.multimc.EntryPoint.listen(EntryPoint.java:143) ~[NewLaunch.jar:?]
at org.multimc.EntryPoint.main(EntryPoint.java:34) ~[NewLaunch.jar:?]
Caused by: java.lang.IllegalArgumentException: Invalid UUID string:
at java.util.UUID.fromString1(UUID.java:280) ~[?:?]
at java.util.UUID.fromString(UUID.java:258) ~[?:?]
at com.mojang.util.UndashedUuid.fromStringLenient(UndashedUuid.java:14) ~[authlib-6.0.52.jar:?]
at net.minecraft.client.main.Main.main(Main.java:151) ~[minecraft-1.20.4-client.jar:?]
at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:470) ~[fabric-loader-0.15.7.jar:?]
... 10 more

[Linguardium]

this is not a fabric loader error.

[Linguardium]

Also, you are required to purchase minecraft in order to play it. please see https://www.minecraft.net/en-us/store/minecraft-java-bedrock-edition-pc