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Internal Exception: io.netty.handler.codec.DecoderException: Unknown serializer type 23

juju
in Support & Bug Reports

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Hi! I am currently having this issue when logging into my fabric-modded server. Does anyone know how to fix this problem? 
Issue: Internal Exception: io.netty.handler.codec.DecoderException: Unknown serializer type 23

 

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https://forums.minecraftforge.net/topic/142605-internal-exception-ionettyhandlercodecdecoderexception-unknown-serializer-type-23/
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