Unable to connect to server with jet boots / bml

[DigitalData]

Version Info

MC 1.20.1
Forge 47.2.17
Jet Boots (latest version)

Error

I wanted to add Jet Boots to a mod pack, however, I am unable to connect to a server I am hosting. The connectivity mod returns the following error:

io.netty.handler.codec.DecoderException: io.netty.handler.codec.EncoderException: java.io.UTFDataFormatException: malformed input around byte 57

Why I think it's BML / Jet Boots

1. Remove bml and jet boots mods from server and client.
2. Restart server and client.
3. Connection works.

My Theory

(lol feel free to ignore)

• This may be a bml error, not a jet boots error. Happy to create an issue there but didn't feel the need to test that, since they're both your mods.
• I don't think it's a compatibility issue with Connectivity as the mod's functionality wouldn't be affecting just the one "new items" mod.
• Ignorant research turns up the following extremely old forum post: https://forums.minecraftforge.net/topic/90713-1152-javaioutfdataformatexception-malformed-input-around-byte-1/
  • One now-deleted response (ffs it's like decade-old stack overflow forums) says it's caused by some differences in serializer read and write.

read and write in your serializer are not symmetrical.

In read you first read the ingredient then the stack. In write you first write the stack, then the ingredient.

[Crimix]

Sorry about the delay of updating my mods, I will try to have a look at it, both I am also thinking of switching to NeoForge

[DigitalData]

No stress. It's looking like NeoForge is the logical next step for everyone. I think for 1.20.1 NeoForge and Forge mods are compatible with either modloader. At least that's the case for Immersive Engineering, which is now fully NeoForge.