If you're currently blocked from publishing to the Figma Community, it's because you have early access to our new component architecture, which we've recently started to roll out. The updates make using components in Figma faster, use less memory, and help pave the way for upcoming features like Variants.
Since these updates aren't compatible with the previous version, it's not safe to publish to the community until they are available to everyone. Publishing files will become available again once the new components are rolled out to 100% of Figma users. We currently expect the change to be complete by November, 2020.