[19:17:06 ERROR]: Parameters:
  net.minecraft.network.play.client.C10PacketCreativeInventoryAction@427a6157[
    field_149629_a=36
    field_149628_b=15xitem.clock@0
    timestamp=1579000625993
  ]

[19:17:06 ERROR]: Parameters:
  net.minecraft.network.play.client.C10PacketCreativeInventoryAction@738ef6d6[
    field_149629_a=37
    field_149628_b=1xtile.fence@0
    timestamp=1579000626027
  ]

[19:17:06 ERROR]: Parameters:
  net.minecraft.network.play.client.C10PacketCreativeInventoryAction@228338f9[
    field_149629_a=38
    field_149628_b=1xitem.npcMobCloner@0
    timestamp=1579000626029
  ]

[19:17:06 ERROR]: Parameters:
  net.minecraft.network.play.client.C10PacketCreativeInventoryAction@cc560c1[
    field_149629_a=39
    field_149628_b=1xitem.npcWand@0
    timestamp=1579000626029
  ]

[19:17:06 ERROR]: Parameters:
  net.minecraft.network.play.client.C10PacketCreativeInventoryAction@10c74563[
    field_149629_a=40
    field_149628_b=1xtile.stoneSlab@5
    timestamp=1579000626029
  ]

[19:17:06 ERROR]: Parameters:
  net.minecraft.network.play.client.C10PacketCreativeInventoryAction@77e09af3[
    field_149629_a=41
    field_149628_b=1xtile.litpumpkin@0
    timestamp=1579000626030
  ]

[19:17:06 ERROR]: Parameters:
  net.minecraft.network.play.client.C10PacketCreativeInventoryAction@31d232d2[
    field_149629_a=42
    field_149628_b=1xtile.cloth@14
    timestamp=1579000626030
  ]
服务器后台时不时刷新一条这个 代码 我不懂这是什么情况 求大佬帮忙解决！！！！！！

具体不是很清楚， 看样子是NPC魔杖有什么问题，是不是lao_dou有个npc魔杖，所以他登录的时候就报错。
纯猜测