我的服务器老是卡不知道为什么每次卡的前面后台总是出现这些乱码

求高手指点

27.07 14:41:01 [Server] INFO at de.Keyle.MyPet.entity.types.MyPet.hasTarget(MyPet.java:145) ~[?:?]

27.07 14:41:01 [Server] INFO java.lang.NoSuchMethodError: de.Keyle.MyPet.entity.types.EntityMyPet.getGoalTarget()Lnet/minecraft/entity/EntityLivingBase;

27.07 14:41:01 [Server] ERROR Cause of unexpected exception was

27.07 14:41:01 [Server] INFO ... 4 more

27.07 14:41:01 [Server] INFO at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:917) ~[MinecraftServer.class:?]

27.07 14:41:01 [Server] INFO at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:672) ~[mj.class:?]

27.07 14:41:01 [Server] INFO at net.minecraft.world.World.func_72939_s(World.java:2383) ~[afn.class:?]

27.07 14:41:01 [Server] INFO at net.minecraft.world.World.func_72870_g(World.java:2559) ~[afn.class:?]

27.07 14:41:01 [Server] INFO at net.minecraft.world.WorldServer.func_72866_a(WorldServer.java:841) ~[mj.class:?]

27.07 14:41:01 [Server] INFO at net.minecraft.world.World.func_72866_a(World.java:2605) ~[afn.class:?]

27.07 14:41:01 [Server] INFO at de.Keyle.MyPet.entity.types.EntityMyPet.func_70071_h_(EntityMyPet.java:599) ~[?:?]

27.07 14:41:01 [Server] INFO at net.minecraft.entity.EntityLiving.func_70071_h_(EntityLiving.java:213) ~[ri.class:?]

27.07 14:41:01 [Server] INFO at net.minecraft.entity.EntityLivingBase.func_70071_h_(EntityLivingBase.java:1760) ~[rh.class:?]

27.07 14:41:01 [Server] INFO at net.minecraft.entity.EntityLiving.func_70636_d(EntityLiving.java:388) ~[ri.class:?]

27.07 14:41:01 [Server] INFO at net.minecraft.entity.EntityLivingBase.func_70636_d(EntityLivingBase.java:1924) ~[rh.class:?]

27.07 14:41:01 [Server] INFO at de.Keyle.MyPet.entity.types.EntityMyPet.func_70619_bc(EntityMyPet.java:527) ~[?:?]

27.07 14:41:01 [Server] INFO at de.Keyle.MyPet.entity.ai.AIGoalSelector.tick(AIGoalSelector.java:118) ~[?:?]

27.07 14:41:01 [Server] INFO at de.Keyle.MyPet.entity.ai.attack.MeleeAttack.tick(MeleeAttack.java:108) ~[?:?]

27.07 14:41:01 [Server] INFO at de.Keyle.MyPet.entity.types.EntityMyPet.attack(EntityMyPet.java:250) ~[?:?]

27.07 14:41:01 [Server] INFO at de.Keyle.MyPet.entity.types.MyPet.hasTarget(MyPet.java:145) ~[?:?]

27.07 14:41:01 [Server] INFO Caused by: java.lang.NoSuchMethodError: de.Keyle.MyPet.entity.types.EntityMyPet.getGoalTarget()Lnet/minecraft/entity/EntityLivingBase;

27.07 14:41:01 [Server] INFO at java.lang.Thread.run(Thread.java:745) [?:1.7.0_85]

27.07 14:41:01 [Server] INFO at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:646) [MinecraftServer.class:?]

27.07 14:41:01 [Server] INFO at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:783) ~[MinecraftServer.class:?]

27.07 14:41:01 [Server] INFO at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:432) ~[lj.class:?]

27.07 14:41:01 [Server] INFO at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:933) ~[MinecraftServer.class:?]

27.07 14:41:01 [Server] INFO net.minecraft.util.ReportedException: Ticking entity

27.07 14:41:01 [Server] ERROR Encountered an unexpected exception

27.07 14:41:00 [Server] INFO BL_WerT drowned whilst trying to escape Skeleton