Hiklee

I'm developing a Forge mod for Minecraft 1.16.5 to run on CatServer (version 1.16.5-1d8d6313, Forge 36.2.39). My mod needs to get the player's UUID from a ServerPlayerEntity object within a Forge ServerChatEvent handler. When I use serverPlayerEntity.getUUID(), my mod compiles fine, but I get a java.lang.NoSuchMethodError: net.minecraft.entity.player.ServerPlayerEntity.getUUID()Ljava/util/UUID; at runtime. I cannot use serverPlayerEntity.getUniqueID() as it causes a compile error (cannot find symbol). Is there a known issue with this on CatServer, or a recommended way for a Forge mod to reliably get a player's UUID from ServerPlayerEntity in this environment? My goal is to pass this UUID to the LuckPerms API (which is running as a Bukkit plugin and successfully connected via ServicesManager). erorr ChatMod: FMLServerStartedEvent received. Attempting to initialize LuckPerms connection... [22:45:20] [Server thread/INFO]: ⚙️ Початок ініціалізації LuckPerms API через Bukkit Services Manager... [22:45:20] [Server thread/INFO]: ✅ Bukkit ServicesManager успішно отримано. [22:45:20] [Server thread/INFO]: ✅ Реєстрацію сервісу LuckPerms знайдено. [22:45:20] [Server thread/INFO]: ✅ API LuckPerms успішно отримано від Bukkit plugin! [22:45:20] [Server thread/INFO]: Використовується реалізація: me.lucko.luckperms.common.api.LuckPermsApiProvider [22:45:20] [Server thread/INFO]: ✅ LuckPerms API схоже що успішно ініціалізовано через Bukkit Services Manager. [22:45:24] [User Authenticator #1/INFO]: UUID of player Hiklee is 92cd7721-2652-3867-896b-2ceba5b99306 [22:45:25] [Server thread/INFO]: Using new advancement loading for net.minecraft.advancements.PlayerAdvancements@24cb7a68 [22:45:26] [Server thread/INFO]: Hiklee[/127.0.0.1:41122] logged in with entity id 210 at (92.23203876864889, 95.6183020148442, 68.24087802017877) [22:45:28] [Async Chat Thread - #0/INFO]: ✅ Скасовано стандартне відправлення чату! [22:45:28] [Async Chat Thread - #0/ERROR]: Exception caught during firing event: net.minecraft.entity.player.ServerPlayerEntity.getUUID()Ljava/util/UUID; Index: 1 Listeners: 0: NORMAL 1: ASM: class com.example.chatmod.ChatEventHandler onPlayerChat(Lnet/minecraftforge/event/ServerChatEvent;)V java.lang.NoSuchMethodError: net.minecraft.entity.player.ServerPlayerEntity.getUUID()Ljava/util/UUID; at com.example.chatmod.ChatPacketHandler.getPlayerPrefix(ChatPacketHandler.java:46) at com.example.chatmod.ChatEventHandler.onPlayerChat(ChatEventHandler.java:32) at net.minecraftforge.eventbus.ASMEventHandler_1_ChatEventHandler_onPlayerChat_ServerChatEvent.invoke(.dynamic) at net.minecraftforge.eventbus.ASMEventHandler.invoke(ASMEventHandler.java:85) at net.minecraftforge.eventbus.EventBus.post(EventBus.java:303) at net.minecraftforge.eventbus.EventBus.post(EventBus.java:283) at net.minecraftforge.common.ForgeHooks.onServerChatEvent(ForgeHooks.java:493) at net.minecraft.network.play.ServerPlayNetHandler.chat(ServerPlayNetHandler.java:1717) at net.minecraft.network.play.ServerPlayNetHandler.func_244548_c(ServerPlayNetHandler.java:1666) at net.minecraft.network.play.ServerPlayNetHandler.func_147354_a(ServerPlayNetHandler.java:1605) at net.minecraft.network.play.client.CChatMessagePacket.lambda$handle$0(CChatMessagePacket.java:34) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:750