IllegalArgumentException - library doesn't work in 1.21.1

[Xemorr]

[15:53:01] [Server thread/WARN]: java.lang.IllegalArgumentException: Can not set net.minecraft.world.item.component.ResolvableProfile field org.bukkit.craftbukkit.v1_21_R1.inventory.CraftMetaSkull.profile to com.mojang.authlib.GameProfile
[15:53:01] [Server thread/WARN]: at java.base/jdk.internal.reflect.FieldAccessorImpl.throwSetIllegalArgumentException(FieldAccessorImpl.java:228)
[15:53:01] [Server thread/WARN]: at java.base/jdk.internal.reflect.FieldAccessorImpl.throwSetIllegalArgumentException(FieldAccessorImpl.java:232)
[15:53:01] [Server thread/WARN]: at java.base/jdk.internal.reflect.MethodHandleObjectFieldAccessorImpl.set(MethodHandleObjectFieldAccessorImpl.java:115)
[15:53:01] [Server thread/WARN]: at java.base/java.lang.reflect.Field.set(Field.java:836)
[15:53:01] [Server thread/WARN]: at dev.dbassett.skullcreator.SkullCreator.mutateItemMeta(SkullCreator.java:298)
[15:53:01] [Server thread/WARN]: at dev.dbassett.skullcreator.SkullCreator.itemWithBase64(SkullCreator.java:161)
[15:53:01] [Server thread/WARN]: at dev.dbassett.skullcreator.SkullCreator.itemFromBase64(SkullCreator.java:91)
[15:53:01] [Server thread/WARN]: at me.xemor.superheroes.data.ConfigHandler.calculateIcon(ConfigHandler.java:188)
[15:53:01] [Server thread/WARN]: at me.xemor.superheroes.data.ConfigHandler.loadSuperheroes(ConfigHandler.java:167)
[15:53:01] [Server thread/WARN]: at me.xemor.superheroes.Superheroes.onServerLoad(Superheroes.java:103)
[15:53:01] [Server thread/WARN]: at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
[15:53:01] [Server thread/WARN]: at java.base/java.lang.reflect.Method.invoke(Method.java:580)
[15:53:01] [Server thread/WARN]: at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306)
[15:53:01] [Server thread/WARN]: at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70)
[15:53:01] [Server thread/WARN]: at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:601)
[15:53:01] [Server thread/WARN]: at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:588)
[15:53:01] [Server thread/WARN]: at net.minecraft.server.MinecraftServer.loadWorld0(MinecraftServer.java:642)
[15:53:01] [Server thread/WARN]: at net.minecraft.server.MinecraftServer.loadLevel(MinecraftServer.java:426)
[15:53:01] [Server thread/WARN]: at net.minecraft.server.dedicated.DedicatedServer.e(DedicatedServer.java:269)
[15:53:01] [Server thread/WARN]: at net.minecraft.server.MinecraftServer.y(MinecraftServer.java:1017)
[15:53:01] [Server thread/WARN]: at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:318)