I use this for my plot world its creative and seems to work, this persons plugins are great.

How to make it not possible to duplicate items with shulker_box?
This plugin allows two players to duplicate items by keeping a shulker_box in their inventory and then, in the creative, freely duplicating it.

[15:28:09 ERROR]: Could not pass event InventoryClickEvent to LimitCreative v4
java.lang.NullPointerException: Cannot invoke "org.bukkit.OfflinePlayer.getUniqueId()" because "player" is null
at com.zenya.limitcreative.InteractionListener.isIllegalPlayerHead(InteractionListener.java:542) ~[LimitCreative.jar:?]
at com.zenya.limitcreative.InteractionListener.onInventoryClick(InteractionListener.java:368) ~[LimitCreative.jar:?]
at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor33.execute(Unknown Source) ~[?:?]
at org.bukkit.plugin.EventExecutor.lambda$create$1(EventExecutor.java:75) ~[paper-api-1.18.2-R0.1-SNAPSHOT.jar:?]
at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:80) ~[paper-api-1.18.2-R0.1-SNAPSHOT.jar:git-Paper-386]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[paper-api-1.18.2-R0.1-SNAPSHOT.jar:?]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:669) ~[paper-api-1.18.2-R0.1-SNAPSHOT.jar:?]
at net.minecraft.server.network.ServerGamePacketListenerImpl.handleContainerClick(ServerGamePacketListenerImpl.java:2861) ~[?:?]
at net.minecraft.network.protocol.game.ServerboundContainerClickPacket.handle(ServerboundContainerClickPacket.java:58) ~[?:?]
at net.minecraft.network.protocol.game.ServerboundContainerClickPacket.handle(ServerboundContainerClickPacket.java:23) ~[?:?]
at net.minecraft.network.protocol.PacketUtils.lambda$ensureRunningOnSameThread$1(PacketUtils.java:51) ~[?:?]
at net.minecraft.server.TickTask.run(TickTask.java:18) ~[paper-1.18.2.jar:git-Paper-386]
at net.minecraft.util.thread.BlockableEventLoop.doRunTask(BlockableEventLoop.java:153) ~[?:?]
at net.minecraft.util.thread.ReentrantBlockableEventLoop.doRunTask(ReentrantBlockableEventLoop.java:24) ~[?:?]
at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:1400) ~[paper-1.18.2.jar:git-Paper-386]
at net.minecraft.server.MinecraftServer.d(MinecraftServer.java:188) ~[paper-1.18.2.jar:git-Paper-386]
at net.minecraft.util.thread.BlockableEventLoop.pollTask(BlockableEventLoop.java:126) ~[?:?]
at net.minecraft.server.MinecraftServer.pollTaskInternal(MinecraftServer.java:1377) ~[paper-1.18.2.jar:git-Paper-386]
at net.minecraft.server.MinecraftServer.pollTask(MinecraftServer.java:1370) ~[paper-1.18.2.jar:git-Paper-386]
at net.minecraft.util.thread.BlockableEventLoop.managedBlock(BlockableEventLoop.java:136) ~[?:?]
at net.minecraft.server.MinecraftServer.waitUntilNextTick(MinecraftServer.java:1348) ~[paper-1.18.2.jar:git-Paper-386]
at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1230) ~[paper-1.18.2.jar:git-Paper-386]
at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:316) ~[paper-1.18.2.jar:git-Paper-386]
at java.lang.Thread.run(Thread.java:833) ~[?:?]

The plugin doesn't work. Server startup does not pass it. No console errors. The idea is good, but it needs to be done well.

Attention: do not use this plugin. It has bugs that make your server completely insecure allowing players to crash the economy.

謝謝插件維護!完美運行!保持更新插件,伺服器是非常需要這個~~推薦!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

I was waiting for this a long time thanks for updating it! Works perfectly. Could you also add a feature where the player that is in creative mode wears a certain har or a uniform so other players can distinguish who is in creative?