Problem/Bug I got an error everytime I try to copy or wand using worldedit

yup as the title says
here are the console logs:

Code:

[17:36:05 INFO]: Gucci_Gangster issued server command: //copy
[17:36:05 ERROR]: [WorldEdit] An unexpected error while handling a WorldEdit command
java.lang.reflect.InvocationTargetException: null
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_181]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_181]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_181]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_181]
    at com.sk89q.worldedit.util.command.parametric.ParametricCallable.call(ParametricCallable.java:243) ~[worldedit-bukkit-7.0.0-beta-01.jar:?]
    at com.sk89q.worldedit.util.command.SimpleDispatcher.call(SimpleDispatcher.java:125) ~[worldedit-bukkit-7.0.0-beta-01.jar:?]
    at com.sk89q.worldedit.extension.platform.CommandManager.handleCommand(CommandManager.java:275) [worldedit-bukkit-7.0.0-beta-01.jar:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_181]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_181]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_181]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_181]
    at com.sk89q.worldedit.util.eventbus.MethodEventHandler.dispatch(MethodEventHandler.java:58) [worldedit-bukkit-7.0.0-beta-01.jar:?]
    at com.sk89q.worldedit.util.eventbus.EventHandler.handleEvent(EventHandler.java:73) [worldedit-bukkit-7.0.0-beta-01.jar:?]
    at com.sk89q.worldedit.util.eventbus.EventBus.dispatch(EventBus.java:187) [worldedit-bukkit-7.0.0-beta-01.jar:?]
    at com.sk89q.worldedit.util.eventbus.EventBus.post(EventBus.java:173) [worldedit-bukkit-7.0.0-beta-01.jar:?]
    at com.sk89q.worldedit.bukkit.WorldEditPlugin.onCommand(WorldEditPlugin.java:227) [worldedit-bukkit-7.0.0-beta-01.jar:?]
    at com.sk89q.bukkit.util.DynamicPluginCommand.execute(DynamicPluginCommand.java:54) [worldedit-bukkit-7.0.0-beta-01.jar:?]
    at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) [spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34]
    at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchCommand(CraftServer.java:648) [spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34]
    at net.minecraft.server.v1_12_R1.PlayerConnection.handleCommand(PlayerConnection.java:1399) [spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34]
    at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:1234) [spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34]
    at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:45) [spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34]
    at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:1) [spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34]
    at net.minecraft.server.v1_12_R1.PlayerConnectionUtils$1.run(SourceFile:13) [spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34]
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_181]
    at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_181]
    at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) [spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34]
    at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:748) [spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34]
    at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:406) [spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34]
    at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:679) [spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34]
    at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:577) [spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34]
    at java.lang.Thread.run(Thread.java:748) [?:1.8.0_181]
Caused by: java.lang.NoSuchMethodError: org.bukkit.block.Block.getBlockData()Lorg/bukkit/block/data/BlockData;
    at com.sk89q.worldedit.bukkit.BukkitWorld.getBlock(BukkitWorld.java:414) ~[?:?]
    at com.sk89q.worldedit.bukkit.BukkitWorld.getFullBlock(BukkitWorld.java:446) ~[?:?]
    at com.sk89q.worldedit.EditSession.getFullBlock(EditSession.java:409) ~[?:?]
    at com.sk89q.worldedit.function.block.ExtentBlockCopy.apply(ExtentBlockCopy.java:71) ~[?:?]
    at com.sk89q.worldedit.function.RegionMaskingFilter.apply(RegionMaskingFilter.java:53) ~[?:?]
    at com.sk89q.worldedit.function.visitor.RegionVisitor.resume(RegionVisitor.java:57) ~[?:?]
    at com.sk89q.worldedit.function.operation.DelegateOperation.resume(DelegateOperation.java:52) ~[?:?]
    at com.sk89q.worldedit.function.operation.Operations.completeLegacy(Operations.java:55) ~[?:?]
    at com.sk89q.worldedit.command.ClipboardCommands.copy(ClipboardCommands.java:94) ~[?:?]
    ... 32 more