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This error on your client usually means the mods on your PC including the versions don't match the mods on your server. Please share your share your client log and server log:
My friends client log:
Forge server log [#GwfXu62] - mclo.gs
the server log:
The provided log messages are not really errors.
Can you please share the full log?
Also, which error message is displayed on the players' screen when they get disconnected?
The error message on their screen reads
Failed to connect to server
Failed to synchronize registry data from server, closing connection
As for the rest of the logs are you asking for the server startup logs? the only logs I see are the disconnects mentioned above, console logs like advancement notifications and console commands and lag notifications: [14Dec2021 20:17:27.940] [Server thread/WARN] [cgm/]: shnozzzz(94fc5c9b-ed95-3370-b2c3-78bd7fd6aa81) tried to fire before cooldown finished or server is lagging? Remaining milliseconds: 63
I have a modded aternos server, me and one of my friends are able to join just fine, but everyone else keeps getting this error:
[13Dec2021 22:17:01.232] [User Authenticator #14/INFO] [net.minecraft.network.login.ServerLoginNetHandler/]: UUID of player AWSditto is 86905634-66ca-49ec-97a0-feaa9e1f968c
[13Dec2021 22:17:03.052] [Server thread/INFO [net.minecraft.network.login.ServerLoginNetHandler/]: com.mojang.authlib.GameProfile@4d0442c6[id=86905634-66ca-49ec-97a0-feaa9e1f968c,name=AWSditto,properties={textures=[com.mojang.authlib.properties.Property@60907e0a]},legacy=false] (/130.113.109.215:58279) lost connection: Disconnected
there are no other logs related to the disconnects but they do occur each instance they try to join.
We have tried everything we can find on similar threads; double checking mods folders for inconsistencies/different versions/incompatibilities, switching on and off of cracked mode, checking forge versions. we all copied the mod pack from the same google drive folder. The problem is happening both for people with real mc accounts and using cracked accounts. Also the same people having this problem joined with no problem just yesterday, but we updated the modpack since then. I do not know what else to try.
