Need help for a custom modpack server that launches but dosen't let me log in

[EquimoX]

Hello everyone,

I made a custom 1.20.1 minecraft modpack to play with my friends,

The modpack works without any problems in single player, so I uploaded it to my server, but when I try to log in, I can't join and it gives me "Internal Execption : io.netty.handlerDecoderExecption" errors,

I tried to remove some Client sided mods to the modpack but I still can't join the server,

Here is the modlist : https://pastebin.com/8A3VHV8s

When i load the server i get a lot of "[Server thread/ERROR] [ne.mi.fm.lo.RuntimeDistCleaner/DISTXFORM]: Attempted to load class net/minecraft/client/renderer/RenderType for invalid dist DEDICATED_SERVER" and "[Server thread/ERROR] [ne.mi.fm.lo.RuntimeDistCleaner/DISTXFORM]: Attempted to load class net/minecraft/client/multiplayer/ClientLevel for invalid dist DEDICATED_SERVER" i cant even do a Pastebin of the console.log file cause it's too big..

Here is every log i can find on my server : https://github.com/Equiimox/ftb-serg-help/tree/main

Can somebody help me find what I did wrong?, maybe I missed some client side mods...

Thank you

[TileEntity]

There are still client-side mods there like TrashSlot

 

[EquimoX]

So I tried to remove every client sided mod, but i still come up with the internal execption error,

I'm trying to launch a server with this mod list : https://pastebin.com/T5nuZPyJ

Still same errors, Am I still missing some client sided mods?

[TileEntity]

Also add the crash-report/log

[EquimoX]

here is the log from the server https://github.com/Equiimox/ftb-serg-help/blob/main/latest.log 

[TileEntity]

Maybe lost_aether and/or ars_nouveau

[EquimoX]

I don't have these mods installed, or maybe you meant deep aether?

[TileEntity]

No - and use Java 17 instead of Java 18

[EquimoX]

Even by switching with Java 17, no luck

[TileEntity]

Maybe use a pre-configured modpack as working base

Most of these already have a server pack