Hello dear Developers and other people. I'm a noob/newbie in this topic. I there was something not clear. When entering the command createkit in the game, not what is happening , and in console is written error. Help me to fix it. Thank you very much !

java.lang.NoClassDefFoundError: Could not initialize class com.earth2me.essentials.commands.Commandcreatekit at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_121] at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_121] at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_121] at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[?:1.8.0_121] at java.lang.Class.newInstance(Unknown Source) ~[?:1.8.0_121] at com.earth2me.essentials.Essentials.onCommandEssentials(Essentials.java:441) [EssentialsX-2.0.1.jar:?] at com.earth2me.essentials.Essentials.onCommand(Essentials.java:381) [EssentialsX-2.0.1.jar:?] at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) [spigot.jar:git-Spigot-550ebace-7019900e] at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) [spigot.jar:git-Spigot-550ebace-7019900e] at org.bukkit.craftbukkit.v1_8_R1.CraftServer.dispatchCommand(CraftServer.java:646) [spigot.jar:git-Spigot-550ebace-7019900e] at net.minecraft.server.v1_8_R1.PlayerConnection.handleCommand(PlayerConnection.java:1115) [spigot.jar:git-Spigot-550ebace-7019900e] at net.minecraft.server.v1_8_R1.PlayerConnection.a(PlayerConnection.java:950) [spigot.jar:git-Spigot-550ebace-7019900e] at net.minecraft.server.v1_8_R1.PacketPlayInChat.a(PacketPlayInChat.java:26) [spigot.jar:git-Spigot-550ebace-7019900e] at net.minecraft.server.v1_8_R1.PacketPlayInChat.a(PacketPlayInChat.java:53) [spigot.jar:git-Spigot-550ebace-7019900e] at net.minecraft.server.v1_8_R1.PacketHandleTask.run(SourceFile:13) [spigot.jar:git-Spigot-550ebace-7019900e] at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_121] at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_121] at net.minecraft.server.v1_8_R1.MinecraftServer.z(MinecraftServer.java:696) [spigot.jar:git-Spigot-550ebace-7019900e] at net.minecraft.server.v1_8_R1.DedicatedServer.z(DedicatedServer.java:316) [spigot.jar:git-Spigot-550ebace-7019900e] at net.minecraft.server.v1_8_R1.MinecraftServer.y(MinecraftServer.java:634) [spigot.jar:git-Spigot-550ebace-7019900e] at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:537) [spigot.jar:git-Spigot-550ebace-7019900e] at java.lang.Thread.run(Unknown Source) [?:1.8.0_121]

What version of EssentialsX are you running? Try restarting your server.

@md678685
I'm using the latest build from Jenkins.