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Players unable to join Forge Server. Packet Error.

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Ocicat posted this in #questions
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OcicatOP
I run a modded Forge server.
Some new players that try to join get kicked 1-3 seconds after joining with this error:
"Internal Exception: io.netty.handler.codec.DecoderException:
java.io.IOException: Packet was larger than expected, fieldSize is too long!"

Weirdly enough, this does not effect old players that previously played on the server, and not all new players are affected, only some. Its unexplainable. The Modpack does not have any issues in singleplayer.

Server is running 1.20.1 Forge
https://gist.github.com/Helios312/0673092182431ae5d41b2a925bdd2d9b
@Tamz https://modrinth.com/mod/packet-fixer
get this mod on both client and server
OcicatOP
Already there
it is?
odd i didn’t see it in the logs
OcicatOP
Let me double check
it’s not just checked
OcicatOP
I probably uploaded one of the logs where we tried removing some mods that were modifying packets. Here is the first original log (exact same) that does have packet fixer:
https://mclo.gs/qW2whqS

We already got rid of convivium and it did not fix the issue.
Another one
OcicatOP
I guess that's a no.
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