title
so i installed 1.3 server pack and when i try to join i get this message

in server console
[13:21:54] [Netty Epoll Server IO #4/INFO] [co.li.co.ConfigSyncManager/]: Skipping config sync, No mods have registered a syncable config.
[13:21:54] [Netty Epoll Server IO #4/WARN] [co.co.Connectivity/]: Login payload for Registry minecraft:item is using 27.1971% of max allowed vanilla size
[13:21:54] [Server thread/INFO] [minecraft/ServerLoginNetHandler]: com.mojang.authlib.GameProfile@45ccabca[id=,name=czychuuu,properties={},legacy=false] (/my ip:26786) lost connection: Disconnected