깃허브에서 다운 받은 칠각별님의 불편한 동거 플러그인 인데요...오류가 여러가지로 떠요

첫번째,

Could not pass event PlayerJoinEvent to InvCaptive v0.0.2

java.lang.NoClassDefFoundError: net/minecraft/server/v1_16_R2/PlayerInventory

        at com.github.noonmaru.invcaptive.plugin.InvCaptive.<clinit>(InvCaptive.kt:25) ~[?:?]

        at com.github.noonmaru.invcaptive.plugin.InvCaptivePlugin.onPlayerJoin(InvCaptivePlugin.kt:72) ~[?:?]

        at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor9.execute(Unknown Source) ~[?:?]

        at org.bukkit.plugin.EventExecutor.lambda$create$1(EventExecutor.java:69) ~[patched_1.16.4.jar:git-Paper-324]

        at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:80) ~[patched_1.16.4.jar:git-Paper-324]

        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[patched_1.16.4.jar:git-Paper-324]

        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:607) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.PlayerList.postChunkLoadJoin(PlayerList.java:273) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.PlayerList.lambda$null$1(PlayerList.java:220) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.PlayerConnection.tick(PlayerConnection.java:163) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.NetworkManager.a(NetworkManager.java:388) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.ServerConnection.c(ServerConnection.java:145) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.MinecraftServer.b(MinecraftServer.java:1381) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.DedicatedServer.b(DedicatedServer.java:377) ~[patched_1.16.4.jar:git-Paper-324]        at net.minecraft.server.v1_16_R3.MinecraftServer.a(MinecraftServer.java:1209) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:997) ~[patched_1.16.4.jar:git-Paper-324]        at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0(MinecraftServer.java:178) ~[patched_1.16.4.jar:git-Paper-324]

        at java.lang.Thread.run(Unknown Source) [?:1.8.0_181]

Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_16_R2.PlayerInventory

        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:116) ~[patched_1.16.4.jar:git-Paper-324]

        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:111) ~[patched_1.16.4.jar:git-Paper-324]

        at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_181]

        at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_181]

        ... 18 more

두번쨰,

null

org.bukkit.command.CommandException: Unhandled exception executing command 'captive' in plugin InvCaptive v0.0.2

        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:47) ~[patched_1.16.4.jar:git-Paper-324]

        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:159) ~[patched_1.16.4.jar:git-Paper-324]

        at org.bukkit.craftbukkit.v1_16_R3.CraftServer.dispatchCommand(CraftServer.java:807) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.PlayerConnection.handleCommand(PlayerConnection.java:2006) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.PlayerConnection.c(PlayerConnection.java:1817) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.PlayerConnection.a(PlayerConnection.java:1770) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.PacketPlayInChat.a(PacketPlayInChat.java:47) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.PacketPlayInChat.a(PacketPlayInChat.java:5) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.PlayerConnectionUtils.lambda$ensureMainThread$1(PlayerConnectionUtils.java:23) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.TickTask.run(SourceFile:18) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.IAsyncTaskHandler.executeTask(IAsyncTaskHandler.java:136) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.IAsyncTaskHandler.executeNext(IAsyncTaskHandler.java:109) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.MinecraftServer.bb(MinecraftServer.java:1133) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.MinecraftServer.executeNext(MinecraftServer.java:1126) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.IAsyncTaskHandler.awaitTasks(IAsyncTaskHandler.java:119) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.MinecraftServer.sleepForTick(MinecraftServer.java:1087) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:1001) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0(MinecraftServer.java:178) ~[patched_1.16.4.jar:git-Paper-324]

        at java.lang.Thread.run(Unknown Source) [?:1.8.0_181]

Caused by: java.lang.NoClassDefFoundError: Could not initialize class com.github.noonmaru.invcaptive.plugin.InvCaptive

        at com.github.noonmaru.invcaptive.plugin.InvCaptivePlugin.onCommand(InvCaptivePlugin.kt:168) ~[?:?]

        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:45) ~[patched_1.16.4.jar:git-Paper-324]

        ... 19 more

세번째,

[21:50:44 ERROR]: Could not pass event WorldSaveEvent to InvCaptive v0.0.2

java.lang.NoClassDefFoundError: Could not initialize class com.github.noonmaru.invcaptive.plugin.InvCaptive

        at com.github.noonmaru.invcaptive.plugin.InvCaptivePlugin.save(InvCaptivePlugin.kt:63) ~[?:?]

        at com.github.noonmaru.invcaptive.plugin.InvCaptivePlugin.onWorldSave(InvCaptivePlugin.kt:82) ~[?:?]

        at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor4.execute(Unknown Source) ~[?:?]

        at org.bukkit.plugin.EventExecutor.lambda$create$1(EventExecutor.java:69) ~[patched_1.16.4.jar:git-Paper-324]

        at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:80) ~[patched_1.16.4.jar:git-Paper-324]

        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[patched_1.16.4.jar:git-Paper-324]

        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:607) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.WorldServer.saveIncrementally(WorldServer.java:961) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.MinecraftServer.a(MinecraftServer.java:1240) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:997) ~[patched_1.16.4.jar:git-Paper-324]

        at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0(MinecraftServer.java:178) ~[patched_1.16.4.jar:git-Paper-324]

        at java.lang.Thread.run(Unknown Source) [?:1.8.0_181]

이렇게 뜹니다. 첫번쨰는 플레이어가 접속했을때, 두번쨰는 /capative라고 플러그인 시작 명령어를 쳤을때, 세번째는 그냥 떴습니다...

플러그인은 ProtocolLib, Kotlin, InvCapative를적용시켰습니다. 플러그인 적용에는 문제가 없었습니다. 어떻게하면 좋을까요?