Hey Caitlin, Celine from Figma here!
Could you try making a small “silent” change to one of your asset in your file? For example, select a component and make a minor change like adding or editing a description in the component configuration then publish and accept the update? Please give a try and let me know how it goes.

Still, if the issue persists, I’d recommend submitting a bug report.
In the form:

• Use your Figma account email
• Share  a URL to your file, and grant can edit access to support-share@figma.com so our team can attempt to replicate and investigate further.
• And if possible, send over a screen recording showcasing this issue where you cannot publish the library so the team can better visualise the issue

Thank you!