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java.lang.NoClassDefFoundError: Could not initialize class de.Keyle.MyPet.compat.v1_10_R1.entity.types.EntityMyWolf	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 de.Keyle.MyPet.compat.v1_10_R1.entity.EntityRegistry.createMinecraftEntity(EntityRegistry.java:94)	at de.Keyle.MyPet.entity.MyPet.createEntity(MyPet.java:442)	at de.Keyle.MyPet.commands.CommandCall.onCommand(CommandCall.java:44)	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141)	at org.bukkit.craftbukkit.v1_10_R1.CraftServer.dispatchCommand(CraftServer.java:646)	at net.minecraft.server.v1_10_R1.PlayerConnection.handleCommand(PlayerConnection.java:1351)	at net.minecraft.server.v1_10_R1.PlayerConnection.a(PlayerConnection.java:1186)	at net.minecraft.server.v1_10_R1.PacketPlayInChat.a(PacketPlayInChat.java:45)	at net.minecraft.server.v1_10_R1.PacketPlayInChat.a(PacketPlayInChat.java:1)	at net.minecraft.server.v1_10_R1.PlayerConnectionUtils$1.run(SourceFile:13)	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)	at java.util.concurrent.FutureTask.run(FutureTask.java:266)	at net.minecraft.server.v1_10_R1.SystemUtils.a(SourceFile:45)	at net.minecraft.server.v1_10_R1.MinecraftServer.D(MinecraftServer.java:737)	at net.minecraft.server.v1_10_R1.DedicatedServer.D(DedicatedServer.java:399)	at net.minecraft.server.v1_10_R1.MinecraftServer.C(MinecraftServer.java:673)	at net.minecraft.server.v1_10_R1.MinecraftServer.run(MinecraftServer.java:572)	at java.lang.Thread.run(Thread.java:745)