宝可梦mod后台警告报错！

[shiguangziyu]

时不时就会爆出个该提示，不知道影不影响，但是每隔几分钟左右就会冒出来，大佬有没有办法知道怎么解决掉？感谢
[20:35:02] [Server thread/INFO]: Caught error in battle. Continuing...
[20:35:02] [Server thread/WARN]: java.lang.NullPointerException
[20:35:02] [Server thread/WARN]: at com.pixelmonmod.pixelmon.RandomHelper.getRandomElementFromList(RandomHelper.java:93)
[20:35:02] [Server thread/WARN]: at com.pixelmonmod.pixelmon.entities.npcs.registry.DropItemRegistry.addRandomBossDrops(DropItemRegistry.java:380)
[20:35:02] [Server thread/WARN]: at com.pixelmonmod.pixelmon.entities.npcs.registry.DropItemRegistry.getBossDrops(DropItemRegistry.java:347)
[20:35:02] [Server thread/WARN]: at com.pixelmonmod.pixelmon.entities.pixelmon.Entity8HoldsItems.dropBossItems(Entity8HoldsItems.java:109)
[20:35:02] [Server thread/WARN]: at com.pixelmonmod.pixelmon.entities.pixelmon.Entity8HoldsItems.func_70645_a(Entity8HoldsItems.java:41)
[20:35:02] [Server thread/WARN]: at com.pixelmonmod.pixelmon.entities.pixelmon.EntityPixelmon.func_70645_a(EntityPixelmon.java:181)
[20:35:02] [Server thread/WARN]: at com.pixelmonmod.pixelmon.entities.pixelmon.Entity5Battle.func_70097_a(Entity5Battle.java:150)
[20:35:02] [Server thread/WARN]: at com.pixelmonmod.pixelmon.entities.pixelmon.EntityPixelmon.func_70097_a(EntityPixelmon.java:513)
[20:35:02] [Server thread/WARN]: at com.pixelmonmod.pixelmon.battles.controller.participants.PixelmonWrapper.doBattleDamage(PixelmonWrapper.java:2574)
[20:35:02] [Server thread/WARN]: at com.pixelmonmod.pixelmon.battles.attacks.Attack.executeAttackEffects(Attack.java:644)
[20:35:02] [Server thread/WARN]: at com.pixelmonmod.pixelmon.battles.attacks.Attack.use(Attack.java:533)
[20:35:02] [Server thread/WARN]: at com.pixelmonmod.pixelmon.battles.controller.participants.PixelmonWrapper.useAttack(PixelmonWrapper.java:773)
[20:35:02] [Server thread/WARN]: at com.pixelmonmod.pixelmon.battles.controller.participants.PixelmonWrapper.useAttack(PixelmonWrapper.java:684)
[20:35:02] [Server thread/WARN]: at com.pixelmonmod.pixelmon.battles.controller.participants.PixelmonWrapper.takeTurn(PixelmonWrapper.java:1325)
[20:35:02] [Server thread/WARN]: at com.pixelmonmod.pixelmon.battles.controller.BattleControllerBase.takeTurn(BattleControllerBase.java:1005)
[20:35:02] [Server thread/WARN]: at com.pixelmonmod.pixelmon.battles.controller.BattleControllerBase.update(BattleControllerBase.java:417)
[20:35:02] [Server thread/WARN]: at com.pixelmonmod.pixelmon.battles.BattleRegistry.updateBattles(BattleRegistry.java:252)
[20:35:02] [Server thread/WARN]: at com.pixelmonmod.pixelmon.battles.BattleTickHandler.tickStart(BattleTickHandler.java:17)
[20:35:02] [Server thread/WARN]: at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_98_BattleTickHandler_tickStart_WorldTickEvent.invoke(.dynamic)
[20:35:02] [Server thread/WARN]: at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
[20:35:02] [Server thread/WARN]: at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:190)
[20:35:02] [Server thread/WARN]: at net.minecraftforge.fml.common.FMLCommonHandler.onPostWorldTick(FMLCommonHandler.java:276)
[20:35:02] [Server thread/WARN]: at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:920)
[20:35:02] [Server thread/WARN]: at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:472)
[20:35:02] [Server thread/WARN]: at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:773)
[20:35:02] [Server thread/WARN]: at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:627)
[20:35:02] [Server thread/WARN]: at java.lang.Thread.run(Unknown Source)