Problem/Bug Caused by: java.lang.NoClassDefFoundError: com.sk89q.worldedit.Vector

hi, im trying to get skwars to work on my server but everytime i try to save with /sws save i get this:

Code:

[INFO] raoul10 issued server command: /sws save

[INFO] Calculating 1 minX:-43 maxX:70

[ERROR] null

org.bukkit.command.CommandException: Unhandled exception executing command 'sws' in plugin SkyWars v2.2.2

at org.bukkit.command.PluginCommand.execute(PluginCommand.java:48) ~[craftbukkit-1.13.2.jar:git-Bukkit-dfa7583]

at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:140) ~[craftbukkit-1.13.2.jar:git-Bukkit-dfa7583]

at org.bukkit.craftbukkit.v1_13_R2.CraftServer.dispatchCommand(CraftServer.java:684) ~[craftbukkit-1.13.2.jar:git-Bukkit-dfa7583]

at net.minecraft.server.v1_13_R2.PlayerConnection.handleCommand(PlayerConnection.java:1570) ~[craftbukkit-1.13.2.jar:git-Bukkit-dfa7583]

at net.minecraft.server.v1_13_R2.PlayerConnection.a(PlayerConnection.java:1424) ~[craftbukkit-1.13.2.jar:git-Bukkit-dfa7583]

at net.minecraft.server.v1_13_R2.PacketPlayInChat.a(SourceFile:37) ~[craftbukkit-1.13.2.jar:git-Bukkit-dfa7583]

at net.minecraft.server.v1_13_R2.PacketPlayInChat.a(SourceFile:9) ~[craftbukkit-1.13.2.jar:git-Bukkit-dfa7583]

at net.minecraft.server.v1_13_R2.PlayerConnectionUtils.lambda$0(PlayerConnectionUtils.java:9) ~[craftbukkit-1.13.2.jar:git-Bukkit-dfa7583]

at net.minecraft.server.v1_13_R2.PlayerConnectionUtils$$Lambda$2361.000000009406C4E0.run(Unknown Source) ~[?:?]

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_212]

at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_212]

at net.minecraft.server.v1_13_R2.SystemUtils.a(SourceFile:199) [craftbukkit-1.13.2.jar:git-Bukkit-dfa7583]

at net.minecraft.server.v1_13_R2.MinecraftServer.b(MinecraftServer.java:839) [craftbukkit-1.13.2.jar:git-Bukkit-dfa7583]

at net.minecraft.server.v1_13_R2.DedicatedServer.b(DedicatedServer.java:382) [craftbukkit-1.13.2.jar:git-Bukkit-dfa7583]

at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:792) [craftbukkit-1.13.2.jar:git-Bukkit-dfa7583]

at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:695) [craftbukkit-1.13.2.jar:git-Bukkit-dfa7583]

at java.lang.Thread.run(Thread.java:813) [?:1.8.0_212]

Caused by: java.lang.NoClassDefFoundError: com.sk89q.worldedit.Vector

at net.daboross.bukkitdev.skywars.commands.setupstuff.WESetupData.isClear(WESetupData.java:98) ~[?:?]

at net.daboross.bukkitdev.skywars.commands.setupstuff.WESetupData.calculateOrigin(WESetupData.java:57) ~[?:?]

at net.daboross.bukkitdev.skywars.commands.setupstuff.SetupData.setOriginBoundaries(SetupData.java:61) ~[?:?]

at net.daboross.bukkitdev.skywars.commands.setupstuff.SetupData.convertToArenaConfig(SetupData.java:76) ~[?:?]

at net.daboross.bukkitdev.skywars.commands.setupsubcommands.SaveCurrentArena.runCommand(SaveCurrentArena.java:57) ~[?:?]

at net.daboross.bukkitdev.skywars.libraries.commands.CommandExecutorBase.onCommand(CommandExecutorBase.java:54) ~[?:?]

at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[craftbukkit-1.13.2.jar:git-Bukkit-dfa7583]

... 16 more

Caused by: java.lang.ClassNotFoundException: com.sk89q.worldedit.Vector

at java.net.URLClassLoader.findClass(URLClassLoader.java:591) ~[?:1.8.0_212]

at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:136) ~[craftbukkit-1.13.2.jar:git-Bukkit-dfa7583]

at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:82) ~[craftbukkit-1.13.2.jar:git-Bukkit-dfa7583]

at java.lang.ClassLoader.loadClassHelper(ClassLoader.java:946) ~[?:1.8.0_212]

at java.lang.ClassLoader.loadClass(ClassLoader.java:891) ~[?:1.8.0_212]

at java.lang.ClassLoader.loadClass(ClassLoader.java:874) ~[?:1.8.0_212]

at net.daboross.bukkitdev.skywars.commands.setupstuff.WESetupData.isClear(WESetupData.java:98) ~[?:?]

at net.daboross.bukkitdev.skywars.commands.setupstuff.WESetupData.calculateOrigin(WESetupData.java:57) ~[?:?]

at net.daboross.bukkitdev.skywars.commands.setupstuff.SetupData.setOriginBoundaries(SetupData.java:61) ~[?:?]

at net.daboross.bukkitdev.skywars.commands.setupstuff.SetupData.convertToArenaConfig(SetupData.java:76) ~[?:?]

at net.daboross.bukkitdev.skywars.commands.setupsubcommands.SaveCurrentArena.runCommand(SaveCurrentArena.java:57) ~[?:?]

at net.daboross.bukkitdev.skywars.libraries.commands.CommandExecutorBase.onCommand(CommandExecutorBase.java:54) ~[?:?]

at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[craftbukkit-1.13.2.jar:git-Bukkit-dfa7583]

... 16 more.

Does anybody know what to do with this error and how to fix it?