服务器进不去 后台显示服务器开着的 玩家和op都进不去 就去就提示
Internal Exceptin：io.netty.handler.DecoderException：java.io.IOException:Bad packet ID 64

可以在后台发指令 就是进不去服务器
后台提示
rror
[17:46:16 信息]: UUID of player Zhifan_ is d5ae0837-eee8-3442-bca6-900667de7346
[17:46:16 警告]: Failed to handle packet for /192.168.10.222:50620
java.lang.NullPointerException
at net.minecraft.server.management.ServerConfigurationManager.attemptLogin(ServerConfigurationManager.java:552) ~[oi.class:?]
at net.minecraft.server.network.NetHandlerLoginServer.func_147326_c(NetHandlerLoginServer.java:128) ~[nn.class:?]
at net.minecraft.server.network.NetHandlerLoginServer.func_147233_a(NetHandlerLoginServer.java:68) ~[nn.class:?]
at net.minecraft.network.NetworkManager.func_74428_b(NetworkMana
ger.java:248) ~[ej.class:?]
at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:173) [nc.class:?]
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:991) [MinecraftServer.class:?]
at net.minecraft.server.dedicated.
DedicatedServer.func_71190_q(DedicatedServer.java:431) [lt.class:?]
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:809) [MinecraftServer.class:?]
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:669) [MinecraftServe
r.class:?]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_162]
[17:46:16 信息]: [url=mailto:com.mojang.authlib.GameProfile@60673f85[id=d5ae0837-eee8-3442-bca6-900667de7346,name=Zhifan_,properties={},legacy=false]com.mojang.authlib.GameProfile@60673f85[id=d5ae0837-eee8-3442-bca6-900667de7346,name=Zhifan_,properties={},legacy=false[/url]] (/192.168.10.222:50620) lost connection: Internal server
error