What happened?

A bug happened!

BCLib

3.0.12

Fabric API

0.86.0

Fabric Loader

0.14.21

Minecraft

1.20.1

Relevant log output

.

Other Mods

better-nether-9.0.9
better-end-4.0.9

Have the same issue.

From fabric.mod.json I see:

"breaks": {
    ...
    "fabric": "\u003e\u003d0.86"
  }

I suppose that this is the cause of this error. But question is was it added intentionally or not? And if it was, what is broken when using BCLib 3.0.12 with Fabric API 0.86.0.

Previous mod version BCLib 3.0.11 runs well with Fabric API 0.86.0.

As a workaround in file fabric.mod.json inside archive bclib-3.0.12.jar I removed line:

"fabric": "\u003e\u003d0.86"

in breaks section.

Successfully ran using updated bclib-3.0.12.jar, better-end-4.0.9.jar and better-nether-9.0.9.jar.

I can't do that right now because there are too many mods. I will wait for an edited version

+1

bump

Seems like more than just BCLib is fucked up. Mods like BetterEnd crash now upon generating new chunks. Rushed release, I guess? I will rollback BCLib and the BetterEnd/Nether mods.

I can't use mods that rely on the latest fabric api version if the betterx mods are present due to this. If I try using the latest version, it doesn't load, and if I try using an older version, the newer mods that depend solely on the latest fapi version won't load either. This issue needs to be fixed asap because it's breaking modpacks completely, basically leaving only 2 options: to not add new mods, or to remove all betterx mods completely

You need to use Fabric API 0.85, not 0.86 or newer. This is what message mean.

I suppose that this is the cause of this error. But question is was it added intentionally or not

Yes, it is intentional. BCLib don't work with 0.86

fabric api 0.86.1 is out