Cannot link minecraft account

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Describe the bug

Every time I try to join mcauth.meteorclient.com
It doesn't let me join, it just says Internal Exception: io.netty.handler.codec.DecoderException: Failed to decode packet 'clientbound/minecraft:hello'

Steps to reproduce

I joined mcauth.meteorclient.com on my java account
It automatically showed up with this error message: Internal Exception: io.netty.handler.codec.DecoderException: Failed to decode packet 'clientbound/minecraft:hello'

Meteor Version

Meteor 1.21.11-75

Minecraft Version

MC 1.21.11

Operating System

macOS

Before submitting a bug report

• This bug wasn't already reported (I have searched bug reports on GitHub).

• This is a valid bug (I am able to reproduce this on the latest dev build).

[Marccccccccccccccc]

Use ViaFabricPlus, if I remember correctly the server is outdated

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like the mod?

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oh yea the mod

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it keeps saying unauthorized after typing code in