> [00:33:02 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'set' in plugin SkyblockWorldEdit v1.5.6.1
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[server.jar:git-Spigot-2086bb0-8cc5a7e]
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[server.jar:git-Spigot-2086bb0-8cc5a7e]
at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchCommand(CraftServer.java:648) ~[server.jar:git-Spigot-2086bb0-8cc5a7e]
at net.minecraft.server.v1_12_R1.PlayerConnection.handleCommand(PlayerConnection.java:1397) [server.jar:git-Spigot-2086bb0-8cc5a7e]
at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:1232) [server.jar:git-Spigot-2086bb0-8cc5a7e]
at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:45) [server.jar:git-Spigot-2086bb0-8cc5a7e]
at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:1) [server.jar:git-Spigot-2086bb0-8cc5a7e]
at net.minecraft.server.v1_12_R1.PlayerConnectionUtils$1.run(SourceFile:13) [server.jar:git-Spigot-2086bb0-8cc5a7e]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_202]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_202]
at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) [server.jar:git-Spigot-2086bb0-8cc5a7e]
at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:748) [server.jar:git-Spigot-2086bb0-8cc5a7e]
at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:406) [server.jar:git-Spigot-2086bb0-8cc5a7e]
at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:679) [server.jar:git-Spigot-2086bb0-8cc5a7e]
at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:577) [server.jar:git-Spigot-2086bb0-8cc5a7e]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_202]
Caused by: java.lang.NoClassDefFoundError: com/wasteofplastic/askyblock/ASkyBlockAPI
at com.shaut.sbwe.e.d.onCommand(Unknown Source) ~[SkyblockWorldEdit%201.5.6.1.jar:?]
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[server.jar:git-Spigot-2086bb0-8cc5a7e]
... 15 more