The pathPrefix in the site's config.md file was not found in the STAGE gdrive's devsitepaths.json. pathPrefix from config.md: "/express/embed-sdk/docs/index.md" devsitepath.json location: "https://main--adp-devsite-stage--adobedocs.aem.page/franklin_assets/devsitepaths.json" To fix this, make sure the pathPrefix listed in the config.md is in the devsitepath.json location.

The pathPrefix in the site's config.md file does not start or end with "/". pathPrefix: "/express/embed-sdk/docs/index.md" To fix this, change the pathPrefix to include a name that starts and ends with "/". For example: "/document-services/" or "/commerce/cloud-tools/". This is required by convention because of the way we construct site URLs. For example: https://developer.adobe.com + /document-services/ + path/to/files/.