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/E122.md.
mfeflow

    MFEFLOW_E122

    An app has both mfeflow.app.json and the old mfe.json.

    Fix

    Keep mfeflow.app.json and delete mfe.json. Move any field you still need into mfeflow.app.json first. See https://mfeflow.github.io/mfeflow/reference/mfeflow-app-json.