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    jsp-api and servlet-api jars must NOT be deployed by your web app. They should be marked as provided but not deployed by your app.

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java.lang.ClassNotFoundException: com.google.gson.Gson	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:101)	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:86)	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)	at com.earth2me.essentials.commands.Commandcreatekit.(Commandcreatekit.java:42)	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)	at java.lang.Class.newInstance(Class.java:442)	at com.earth2me.essentials.Essentials.onCommandEssentials(Essentials.java:434)	at com.earth2me.essentials.Essentials.onCommand(Essentials.java:374)	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141)	at org.bukkit.craftbukkit.v1_8_R1.CraftServer.dispatchCommand(CraftServer.java:646)	at net.minecraft.server.v1_8_R1.PlayerConnection.handleCommand(PlayerConnection.java:1115)	at net.minecraft.server.v1_8_R1.PlayerConnection.a(PlayerConnection.java:950)	at net.minecraft.server.v1_8_R1.PacketPlayInChat.a(PacketPlayInChat.java:26)	at net.minecraft.server.v1_8_R1.PacketPlayInChat.a(PacketPlayInChat.java:53)	at net.minecraft.server.v1_8_R1.PacketHandleTask.run(SourceFile:13)	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)	at java.util.concurrent.FutureTask.run(FutureTask.java:266)	at net.minecraft.server.v1_8_R1.MinecraftServer.z(MinecraftServer.java:696)	at net.minecraft.server.v1_8_R1.DedicatedServer.z(DedicatedServer.java:316)	at net.minecraft.server.v1_8_R1.MinecraftServer.y(MinecraftServer.java:634)	at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:537)	at java.lang.Thread.run(Thread.java:745)