I use fabric for client side mods and this has never happened before today. This does not come up when logging into other servers. I can log in just fine with a plain stock mc. Does this have to do with the bedrock integration?

 

looks like it has something to do with the new environments given the biome reference.

 

Unsure if this affects all fabric clients, so far I haven't heard about any other cases. This is related to custom biomes and how your client registers them which seems to differ from the standard client implementation (and we can't control that). Will see if we can do anything on our side to satisfy the raw id matching condition. If this doesn't affect other fabric clients it's most likely one of your installed mods that's causing it.

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Sounds good, just drop an update here whenever and I’ll retry. If it’s still throwing this error then I’ll audit my mods and find the root of the problem. Thank you for your help.

 

You could probably check the latest file in your Logs folder see what is throwing that error?