Getting an error about read-write overflow whenever I try to join the server I'm hosting

[CrystalKami]

Hello, I'm currently trying to get a modded server to run (using my own modpack) and I've been unable to join. In this case, I keep getting the error "internal exception: io.netty.handler.codec.DecoderException: java.lang.IndexOutOfBoundsException: readerIndex(9) + length(4) exceeds writerIndex(9): PooledUnsafeDirectByteBuff(ridx: 9, widx: 9, cap 9/10)" or some variation of it (length and reader index change fairly frequently). I've tried removing mods, changing mods, changing configs, etc. 

If anyone has any help, that would be great

Also, here are the logs for both the client and server 

 

https://github.com/CrystalKami/logs-and-stuff

[warjort]

That error means one of your mods has broken networking (usually a broken custom recipe since this is at login).

The log message does not say which mod is causing the problem for this kind of error.

Probably the only way you will find the problem is to experiment with removing mods.

Backup your world before removing mods.

 

But here's all the bug reports on github with an error similar to yours.

https://github.com/search?q=readerIndex(9)+%2B+length(4)+exceeds+writerIndex(9)&type=issues

Maybe one of them matches a mod you have, or one of the bug reports points to another mod causing the problem?

[CrystalKami]

3 hours ago, warjort said:

That error means one of your mods has broken networking (usually a broken custom recipe since this is at login).

The log message does not say which mod is causing the problem for this kind of error.

Probably the only way you will find the problem is to experiment with removing mods.

Backup your world before removing mods.

 

But here's all the bug reports on github with an error similar to yours.

https://github.com/search?q=readerIndex(9)+%2B+length(4)+exceeds+writerIndex(9)&type=issues

Maybe one of them matches a mod you have, or one of the bug reports points to another mod causing the problem?

Awesome, thanks for the help! I've been removing and re-adding mods for the past few days with little luck, I've got a modlist here if you're willing to look through it. This is the client list (I've taken all the client side mods out of the server list)
https://pastebin.com/vLQxXkad