Some errors in this version.

I've made my own plugin, if someone interested, check it out solving major errors and optimization problems: https://www.spigotmc.org/resources/crowtycraft-anti-sign-edit.114336/

Some errors in this version.

I've made my own plugin, if someone interested, check it out solving major errors and optimization problems:

https://github.com/LucasitoInDev/crowty-anti-sign-edit

There is no configuration available for this plugin. What I need is a plugin that completely disables sign editing, but this plugin has no configuration, so admins can still edit signs, I don't want that. Also, the messages are not in english / are not configurable also.

[23:26:33 ERROR]: Could not pass event PlayerInteractEvent to DisableEditSign v1.0
java.lang.NullPointerException: Cannot invoke "String.replace(java.lang.CharSequence, java.lang.CharSequence)" because "prefix" is null
at de.richjoker.disableeditsign.DisableEditSign.onPlayerInteract(DisableEditSign.java:66) ~[DisableEditSign-1.0.jar:?]
at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor789.execute(Unknown Source) ~[?:?]
at org.bukkit.plugin.EventExecutor$2.execute(EventExecutor.java:77) ~[purpur-api-1.20.1-R0.1-SNAPSHOT.jar:?]
at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:77) ~[purpur-api-1.20.1-R0.1-SNAPSHOT.jar:git-Purpur-2017]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[purpur-api-1.20.1-R0.1-SNAPSHOT.jar:?]
at io.papermc.paper.plugin.manager.PaperEventManager.callEvent(PaperEventManager.java:54) ~[purpur-1.20.1.jar:git-Purpur-2017]
at io.papermc.paper.plugin.manager.PaperPluginManagerImpl.callEvent(PaperPluginManagerImpl.java:126) ~[purpur-1.20.1.jar:git-Purpur-2017]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:617) ~[purpur-api-1.20.1-R0.1-SNAPSHOT.jar:?]
at org.bukkit.craftbukkit.v1_20_R1.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:566) ~[purpur-1.20.1.jar:git-Purpur-2017]
at net.minecraft.server.level.ServerPlayerGameMode.useItemOn(ServerPlayerGameMode.java:539) ~[?:?]
at net.minecraft.server.network.ServerGamePacketListenerImpl.handleUseItemOn(ServerGamePacketListenerImpl.java:2043) ~[?:?]
at net.minecraft.network.protocol.game.ServerboundUseItemOnPacket.handle(ServerboundUseItemOnPacket.java:37) ~[?:?]
at net.minecraft.network.protocol.game.ServerboundUseItemOnPacket.a(ServerboundUseItemOnPacket.java:9) ~[?:?]
at net.minecraft.network.protocol.PacketUtils.lambda$ensureRunningOnSameThread$0(PacketUtils.java:51) ~[?:?]
at net.minecraft.server.TickTask.run(TickTask.java:18) ~[purpur-1.20.1.jar:git-Purpur-2017]
at net.minecraft.util.thread.BlockableEventLoop.doRunTask(BlockableEventLoop.java:153) ~[?:?]
at net.minecraft.util.thread.ReentrantBlockableEventLoop.doRunTask(ReentrantBlockableEventLoop.java:24) ~[?:?]
at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:1366) ~[purpur-1.20.1.jar:git-Purpur-2017]
at net.minecraft.server.MinecraftServer.d(MinecraftServer.java:197) ~[purpur-1.20.1.jar:git-Purpur-2017]
at net.minecraft.util.thread.BlockableEventLoop.pollTask(BlockableEventLoop.java:126) ~[?:?]
at net.minecraft.server.MinecraftServer.pollTaskInternal(MinecraftServer.java:1343) ~[purpur-1.20.1.jar:git-Purpur-2017]
at net.minecraft.server.MinecraftServer.pollTask(MinecraftServer.java:1336) ~[purpur-1.20.1.jar:git-Purpur-2017]
at net.minecraft.util.thread.BlockableEventLoop.managedBlock(BlockableEventLoop.java:136) ~[?:?]
at net.minecraft.server.MinecraftServer.waitUntilNextTick(MinecraftServer.java:1314) ~[purpur-1.20.1.jar:git-Purpur-2017]
at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1202) ~[purpur-1.20.1.jar:git-Purpur-2017]
at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:323) ~[purpur-1.20.1.jar:git-Purpur-2017]
at java.lang.Thread.run(Thread.java:833) ~[?:?]