Hi, I'm trying to build kotlinx.serialization from...

# multiplatform

[Joseph Burton]

Hi, I'm trying to build kotlinx.serialization from source (using ./gradlew build install), but I'm getting the following multiplatform error:

* What went wrong:
Execution failed for task ':kotlinx-serialization-core:install'.
> Could not publish configuration 'archives'
   > A POM cannot have multiple artifacts with the same type and classifier. Already have MavenArtifact kotlinx-serialization-core:klib:klib:null, trying to add MavenArtifact kotlinx-serialization-core:klib:klib:null.

My Java version is 15.0.2, and I'm using Ubuntu 20.04. Nothing I have tried in the last few days fixes this, does anyone know what the issue is?