[12:05:23 WARN]: java.lang.NoClassDefFoundError: com/earth2me/essentials/ItemDb
[12:05:23 WARN]:        at java.lang.ClassLoader.defineClass1(Native Method)
[12:05:23 WARN]:        at java.lang.ClassLoader.defineClass(Unknown Source)
[12:05:23 WARN]:        at java.security.SecureClassLoader.defineClass(Unknown Source)
[12:05:23 WARN]:        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:152)
[12:05:23 WARN]:        at org.bukkit.plugin.java.JavaPluginLoader.getClassByName(JavaPluginLoader.java:189)
[12:05:23 WARN]:        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:115)
[12:05:23 WARN]:        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:104)
[12:05:23 WARN]:        at java.lang.ClassLoader.loadClass(Unknown Source)
[12:05:23 WARN]:        at java.lang.ClassLoader.loadClass(Unknown Source)
[12:05:23 WARN]:        at com.elmakers.mine.bukkit.magic.MagicController$3.run(MagicController.java:1074)
[12:05:23 WARN]:        at org.bukkit.craftbukkit.v1_12_R1.scheduler.CraftTask.run(CraftTask.java:64)
[12:05:23 WARN]:        at org.bukkit.craftbukkit.v1_12_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:423)
[12:05:23 WARN]:        at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:840)
[12:05:23 WARN]:        at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:423)
[12:05:23 WARN]:        at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:774)
[12:05:23 WARN]:        at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:666)
[12:05:23 WARN]:        at java.lang.Thread.run(Unknown Source)
[12:05:23 WARN]: Caused by: java.lang.ClassNotFoundException: com.earth2me.essentials.ItemDb
[12:05:23 WARN]:        at java.net.URLClassLoader.findClass(Unknown Source)
[12:05:23 WARN]:        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:156)
[12:05:23 WARN]:        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:104)
[12:05:23 WARN]:        at java.lang.ClassLoader.loadClass(Unknown Source)
[12:05:23 WARN]:        at java.lang.ClassLoader.loadClass(Unknown Source)
[12:05:23 WARN]:        ... 17 more