Unable to publish library on free account? (using only 2 files in a project)

In my Figma free account I had a design system that had a single file with colors and was published as a library. I have accidently deleted it and was able to restore but now I have no assets in the library.
But the main issue is that I can’t publish any other file as a library.
When I try it prompts the popup for the limitations of a free account and offers to upgrade.
I have only one project and only 2 files in that project.
How do I bypass that issue/bug?