An internal error has occurred while attempting to perform this command

[iamsif]

ERROR: An internal error has occurred while attempting to perform this command
How do I fix this? If its a corrupted plugin I have checked like most of it please help!
 

Plugins:

Error:

  [Sat 00:00:48 INFO  Server/PlayerConnection] Sifery issued server command: /mrl create Example
! [Sat 00:00:48 WARN ] java.lang.reflect.InvocationTargetException
! [Sat 00:00:48 WARN ]     at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
! [Sat 00:00:48 WARN ]     at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
! [Sat 00:00:48 WARN ]     at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
! [Sat 00:00:48 WARN ]     at java.base/java.lang.reflect.Method.invoke(Method.java:568)
! [Sat 00:00:48 WARN ]     at MineResetLite.jar//com.koletar.jj.mineresetlite.CommandManager.callCommand(CommandManager.java:128)
! [Sat 00:00:48 WARN ]     at MineResetLite.jar//com.koletar.jj.mineresetlite.MineResetLite.onCommand(MineResetLite.java:299)
! [Sat 00:00:48 WARN ]     at org.bukkit.command.PluginCommand.execute(PluginCommand.java:45)
! [Sat 00:00:48 WARN ]     at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:159)
! [Sat 00:00:48 WARN ]     at org.bukkit.craftbukkit.v1_18_R2.CraftServer.dispatchCommand(CraftServer.java:906)
! [Sat 00:00:48 WARN ]     at net.minecraft.server.network.PlayerConnection.a(PlayerConnection.java:2307)
! [Sat 00:00:48 WARN ]     at net.minecraft.server.network.PlayerConnection.a(PlayerConnection.java:2118)
! [Sat 00:00:48 WARN ]     at net.minecraft.server.network.PlayerConnection.a(PlayerConnection.java:2099)
! [Sat 00:00:48 WARN ]     at net.minecraft.network.protocol.game.PacketPlayInChat.a(PacketPlayInChat.java:46)
! [Sat 00:00:48 WARN ]     at net.minecraft.network.protocol.game.PacketPlayInChat.a(PacketPlayInChat.java:6)
! [Sat 00:00:48 WARN ]     at net.minecraft.network.protocol.PlayerConnectionUtils.lambda$ensureRunningOnSameThread$1(PlayerConnectionUtils.java:51)
! [Sat 00:00:48 WARN ]     at net.minecraft.server.TickTask.run(TickTask.java:18)

! [Sat 00:00:48 WARN ]     at net.minecraft.util.thread.IAsyncTaskHandler.d(IAsyncTaskHandler.java:153)
! [Sat 00:00:48 WARN ]     at net.minecraft.util.thread.IAsyncTaskHandlerReentrant.d(IAsyncTaskHandlerReentrant.java:24)
! [Sat 00:00:48 WARN ]     at net.minecraft.server.MinecraftServer.b(MinecraftServer.java:1399)
! [Sat 00:00:48 WARN ]     at net.minecraft.server.MinecraftServer.d(MinecraftServer.java:188)
! [Sat 00:00:48 WARN ]     at net.minecraft.util.thread.IAsyncTaskHandler.y(IAsyncTaskHandler.java:126)
! [Sat 00:00:48 WARN ]     at net.minecraft.server.MinecraftServer.be(MinecraftServer.java:1376)
! [Sat 00:00:48 WARN ]     at net.minecraft.server.MinecraftServer.y(MinecraftServer.java:1369)
! [Sat 00:00:48 WARN ]     at net.minecraft.util.thread.IAsyncTaskHandler.c(IAsyncTaskHandler.java:136)
! [Sat 00:00:48 WARN ]     at net.minecraft.server.MinecraftServer.x(MinecraftServer.java:1347)
! [Sat 00:00:48 WARN ]     at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:1229)
! [Sat 00:00:48 WARN ]     at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:315)
! [Sat 00:00:48 WARN ]     at java.base/java.lang.Thread.run(Thread.java:833)
! [Sat 00:00:48 WARN ] Caused by: java.lang.NoSuchMethodError: 'com.sk89q.worldedit.bukkit.selections.Selection com.sk89q.worldedit.bukkit.WorldEditPlugin.getSelection(org.bukkit.entity.Player)'
! [Sat 00:00:48 WARN ]     at MineResetLite.jar//com.koletar.jj.mineresetlite.commands.MineCommands.createMine(MineCommands.java:112)
! [Sat 00:00:48 WARN ]     ... 28 more

- [Sat 00:00:48 ERROR Server/PlayerConnection] null
org.bukkit.command.CommandException: Unhandled exception executing command 'mrl' in plugin MineResetLite v0.4.7
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:47)
    at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:159)
    at org.bukkit.craftbukkit.v1_18_R2.CraftServer.dispatchCommand(CraftServer.java:906)
    at net.minecraft.server.network.ServerGamePacketListenerImpl.handleCommand(ServerGamePacketListenerImpl.java:2307)
    at net.minecraft.server.network.ServerGamePacketListenerImpl.handleChat(ServerGamePacketListenerImpl.java:2118)
    at net.minecraft.server.network.ServerGamePacketListenerImpl.handleChat(ServerGamePacketListenerImpl.java:2099)
    at net.minecraft.network.protocol.game.ServerboundChatPacket.handle(ServerboundChatPacket.java:46)
    at net.minecraft.network.protocol.game.ServerboundChatPacket.a(ServerboundChatPacket.java:6)
    at net.minecraft.network.protocol.PacketUtils.lambda$ensureRunningOnSameThread$1(PacketUtils.java:51)
    at net.minecraft.server.TickTask.run(TickTask.java:18)
    at net.minecraft.util.thread.BlockableEventLoop.doRunTask(BlockableEventLoop.java:153)
    at net.minecraft.util.thread.ReentrantBlockableEventLoop.doRunTask(ReentrantBlockableEventLoop.java:24)
    at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:1399)
    at net.minecraft.server.MinecraftServer.d(MinecraftServer.java:188)
    at net.minecraft.util.thread.BlockableEventLoop.pollTask(BlockableEventLoop.java:126)
    at net.minecraft.server.MinecraftServer.pollTaskInternal(MinecraftServer.java:1376)
    at net.minecraft.server.MinecraftServer.pollTask(MinecraftServer.java:1369)
    at net.minecraft.util.thread.BlockableEventLoop.managedBlock(BlockableEventLoop.java:136)
    at net.minecraft.server.MinecraftServer.waitUntilNextTick(MinecraftServer.java:1347)
    at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1229)
    at net.minecraft.server.MinecraftServer.lambda$s