Arkania is not launched (read the log)

---- Minecraft Crash Report ----
// Who set us up the TNT?

Time: 2025-06-29 15:45:40
Description: Initializing game

java.lang.NoClassDefFoundError: pro/gravit/launcher/request/RequestException
at com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService.createMinecraftSessionService(

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YggdrasilAuthenticationService.java

:67)
at net.minecraft.class_310.<init>(class_310.java:441)
at net.minecraft.client.main.Main.main(

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Main.java

:211)
at

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net.fabricmc.loader.impl.game

.minecraft.MinecraftGameProvider.launch(

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MinecraftGameProvider.java

:470)
at net.fabricmc.loader.impl.launch.knot.Knot.launch(

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Knot.java

:74)
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(

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KnotClient.java

:23)
Caused by: java.lang.ClassNotFoundException: pro.gravit.launcher.request.RequestException
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(

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BuiltinClassLoader.java

:641)
at java.base/java.lang.ClassLoader.loadClass(

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ClassLoader.java

:525)
at net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.loadClass(

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KnotClassDelegate.java

:226)
at net.fabricmc.loader.impl.launch.knot.KnotClassLoader.loadClass(

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KnotClassLoader.java

:119)
at java.base/java.lang.ClassLoader.loadClass(

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ClassLoader.java

:525)
... 6 more