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/E501.md.
mfeflow

    MFEFLOW_E501

    A deploy failed the schema gate.

    Fix

    Fix what the message names: the remote's mfeflow.app.json, its mf-manifest.json or the version. Nothing was uploaded. See https://mfeflow.github.io/mfeflow/guide/deploy-and-rollback.