For AI agents: the complete documentation index is available at https://mfeflow.github.io/mfeflow/llms.txt, the full documentation bundle is available at https://mfeflow.github.io/mfeflow/llms-full.txt, and this page is available as Markdown at https://mfeflow.github.io/mfeflow/errors/E404.md.
mfeflow

    MFEFLOW_E404

    A feature in the registry folder cannot be published.

    Fix

    Fix the features listed above. They are checked with the same rules mfeflow add @namespace/name applies, so a feature that passes here installs for users.