Помогите Ошибка в плагите SimpleSit

Здарова, сегодня на сервере перестала работать команда /lay в плагине SimpleSit. В чат выбивает an internal error occurred while attempting to perform this command
В консоли:
[14:45:33] [Server thread/WARN]: java.lang.ClassNotFoundException: net.minecraft.server.v1_16_R3.PacketPlayOutBed
[14:45:33] [Server thread/WARN]: at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:116)
[14:45:33] [Server thread/WARN]: at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:111)
[14:45:33] [Server thread/WARN]: at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:589)
[14:45:33] [Server thread/WARN]: at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
[14:45:33] [Server thread/WARN]: at java.base/java.lang.Class.forName0(Native Method)
[14:45:33] [Server thread/WARN]: at java.base/java.lang.Class.forName(Class.java:315)
[14:45:33] [Server thread/WARN]: at net.apcat.simplesit.utils.Utils.getNMSClass(Utils.java:31)
[14:45:33] [Server thread/WARN]: at net.apcat.simplesit.utils.NMS.<init>(NMS.java:25)
[14:45:33] [Server thread/WARN]: at net.apcat.simplesit.tasks.LayTask.<init>(LayTask.java:49)
[14:45:33] [Server thread/WARN]: at net.apcat.simplesit.SimpleSitPlayer.setLaying(SimpleSitPlayer.java:128)
[14:45:33] [Server thread/WARN]: at net.apcat.simplesit.commands.LayCommand.onCommand(LayCommand.java:48)
[14:45:33] [Server thread/WARN]: at org.bukkit.command.PluginCommand.execute(PluginCommand.java:45)
[14:45:33] [Server thread/WARN]: at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:172)
[14:45:33] [Server thread/WARN]: at org.bukkit.craftbukkit.v1_16_R3.CraftServer.dispatchCommand(CraftServer.java:806)
[14:45:33] [Server thread/WARN]: at net.minecraft.server.v1_16_R3.PlayerConnection.handleCommand(PlayerConnection.java:2146)
[14:45:33] [Server thread/WARN]: at net.minecraft.server.v1_16_R3.PlayerConnection.c(PlayerConnection.java:1949)
[14:45:33] [Server thread/WARN]: at net.minecraft.server.v1_16_R3.PlayerConnection.a(PlayerConnection.java:1902)
[14:45:33] [Server thread/WARN]: at net.minecraft.server.v1_16_R3.PacketPlayInChat.a(PacketPlayInChat.java:47)
[14:45:33] [Server thread/WARN]: at net.minecraft.server.v1_16_R3.PacketPlayInChat.a(PacketPlayInChat.java:5)
[14:45:33] [Server thread/WARN]: at net.minecraft.server.v1_16_R3.PlayerConnectionUtils.lambda$ensureMainThread$1(PlayerConnectionUtils.java:43)
[14:45:33] [Server thread/WARN]: at net.minecraft.server.v1_16_R3.TickTask.run(SourceFile:18)
[14:45:33] [Server thread/WARN]: at net.minecraft.server.v1_16_R3.IAsyncTaskHandler.executeTask(IAsyncTaskHandler.java:136)
[14:45:33] [Server thread/WARN]: at net.minecraft.server.v1_16_R3.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23)
[14:45:33] [Server thread/WARN]: at net.minecraft.server.v1_16_R3.IAsyncTaskHandler.executeNext(IAsyncTaskHandler.java:109)
[14:45:33] [Server thread/WARN]: at net.minecraft.server.v1_16_R3.MinecraftServer.bb(MinecraftServer.java:1218)
[14:45:33] [Server thread/WARN]: at net.minecraft.server.v1_16_R3.MinecraftServer.executeNext(MinecraftServer.java:1211)
[14:45:33] [Server thread/WARN]: at net.minecraft.server.v1_16_R3.IAsyncTaskHandler.awaitTasks(IAsyncTaskHandler.java:119)
[14:45:33] [Server thread/WARN]: at net.minecraft.server.v1_16_R3.MinecraftServer.sleepForTick(MinecraftServer.java:1187)
[14:45:33] [Server thread/WARN]: at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:1027)
[14:45:33] [Server thread/WARN]: at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0(MinecraftServer.java:176)
[14:45:33] [Server thread/WARN]: at java.base/java.lang.Thread.run(Thread.java:834)
[14:45:33] [Server thread/ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'lay' in plugin SimpleSit v1.6.3
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:47) ~[1.16.5-patched.jar:git-Yatopia-ver/1.16.5-33]
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:172) ~[1.16.5-patched.jar:git-Yatopia-ver/1.16.5-33]
at org.bukkit.craftbukkit.v1_16_R3.CraftServer.dispatchCommand(CraftServer.java:806) ~[1.16.5-patched.jar:git-Yatopia-ver/1.16.5-33]
at net.minecraft.server.v1_16_R3.PlayerConnection.handleCommand(PlayerConnection.java:2146) ~[1.16.5-patched.jar:git-Yatopia-ver/1.16.5-33]
at net.minecraft.server.v1_16_R3.PlayerConnection.c(PlayerConnection.java:1949) ~[1.16.5-patched.jar:git-Yatopia-ver/1.16.5-33]
at net.minecraft.server.v1_16_R3.PlayerConnection.a(PlayerConnection.java:1902) ~[1.16.5-patched.jar:git-Yatopia-ver/1.16.5-33]
at net.minecraft.server.v1_16_R3.PacketPlayInChat.a(PacketPlayInChat.java:47) ~[1.16.5-patched.jar:git-Yatopia-ver/1.16.5-33]
at net.minecraft.server.v1_16_R3.PacketPlayInChat.a(PacketPlayInChat.java:5) ~[1.16.5-patched.jar:git-Yatopia-ver/1.16.5-33]
at net.minecraft.server.v1_16_R3.PlayerConnectionUtils.lambda$ensureMainThread$1(PlayerConnectionUtils.java:43) ~[1.16.5-patched.jar:git-Yatopia-ver/1.16.5-33]
at net.minecraft.server.v1_16_R3.TickTask.run(SourceFile:18) ~[1.16.5-patched.jar:git-Yatopia-ver/1.16.5-33]
at net.minecraft.server.v1_16_R3.IAsyncTaskHandler.executeTask(IAsyncTaskHandler.java:136) ~[1.16.5-patched.jar:git-Yatopia-ver/1.16.5-33]
at net.minecraft.server.v1_16_R3.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23) ~[1.16.5-patched.jar:git-Yatopia-ver/1.16.5-33]
at net.minecraft.server.v1_16_R3.IAsyncTaskHandler.executeNext(IAsyncTaskHandler.java:109) ~[1.16.5-patched.jar:git-Yatopia-ver/1.16.5-33]
at net.minecraft.server.v1_16_R3.MinecraftServer.bb(MinecraftServer.java:1218) ~[1.16.5-patched.jar:git-Yatopia-ver/1.16.5-33]
at net.minecraft.server.v1_16_R3.MinecraftServer.executeNext(MinecraftServer.java:1211) ~[1.16.5-patched.jar:git-Yatopia-ver/1.16.5-33]
at net.minecraft.server.v1_16_R3.IAsyncTaskHandler.awaitTasks(IAsyncTaskHandler.java:119) ~[1.16.5-patched.jar:git-Yatopia-ver/1.16.5-33]
at net.minecraft.server.v1_16_R3.MinecraftServer.sleepForTick(MinecraftServer.java:1187) ~[1.16.5-patched.jar:git-Yatopia-ver/1.16.5-33]
at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:1027) ~[1.16.5-patched.jar:git-Yatopia-ver/1.16.5-33]
at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0(MinecraftServer.java:176) ~[1.16.5-patched.jar:git-Yatopia-ver/1.16.5-33]
at java.lang.Thread.run(Thread.java:834) [?:?]
Caused by: java.lang.NullPointerException
at net.apcat.simplesit.utils.NMS.getConstructor(NMS.java:35) ~[?:?]
at net.apcat.simplesit.tasks.LayTask.<init>(LayTask.java:50) ~[?:?]
at net.apcat.simplesit.SimpleSitPlayer.setLaying(SimpleSitPlayer.java:128) ~[?:?]
at net.apcat.simplesit.commands.LayCommand.onCommand(LayCommand.java:48) ~[?:?]
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:45) ~[1.16.5-patched.jar:git-Yatopia-ver/1.16.5-33]
... 19 more