I created my survival world in 1.19.2 with fabric api 0.59.0 and the auto created datapack from fabric api (not in datapacks folder). I tried updating the fabric api mod to 0.76.1 (latest for 1.19.2) and when I tried opening the world it shows that error message.

steps to recreate (not sure if it works, just what I did)

1. create world in 1.19.2 with fabric api 0.59.0.
2. replace fabric api with 0.76.1 for 1.19.2
3. open the world from step 1

I'm pretty sure it's an issue with the 0.59.0 datapack being incompatible with the new mod version and shows the error. I'm trying to download sodium extras and it requires 0.76.0. I can't delete the old datapack bc it's not in the datapacks folder.

Please attach the log files, found in the logs folder under .minecraft.

latest.log

Not a bug on this side, so closing. Does seem like a mod incompatibility issue. Make sure to update all mods and try again.