[10:39:10] [Server thread/WARN]: [Core] Task #25 for Core v2.0 generated an exception
java.lang.NoClassDefFoundError: net/minecraft/server/v1_7_R4/EntityZombie
	at com.fearpvp.ai.types.RetardZombieType.<clinit>(RetardZombieType.java:19) ~[?:?]
	at com.fearpvp.ai.AI.load(AI.java:66) ~[?:?]
	at com.fearpvp.core.objects.Module.pre_load(Module.java:65) ~[?:?]
	at com.fearpvp.core.commands.Load.silentLoad(Load.java:54) ~[?:?]
	at com.fearpvp.core.Core.run(Core.java:65) ~[?:?]
	at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftTask.run(CraftTask.java:59) ~[spigot.jar:git-PaperSpigot-"8b18730"]
	at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:349) [spigot.jar:git-PaperSpigot-"8b18730"]
	at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:783) [spigot.jar:git-PaperSpigot-"8b18730"]
	at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:378) [spigot.jar:git-PaperSpigot-"8b18730"]
	at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:713) [spigot.jar:git-PaperSpigot-"8b18730"]
	at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:616) [spigot.jar:git-PaperSpigot-"8b18730"]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_66-internal]
Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_7_R4.EntityZombie
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:92) ~[spigot.jar:git-PaperSpigot-"8b18730"]
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:87) ~[spigot.jar:git-PaperSpigot-"8b18730"]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_66-internal]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_66-internal]
	... 12 more