5008: Media source unavailable.
source_url was permitted but did not deliver the complete bytes.
HTTP status: 422.
The address at param could not be reached, did not answer within the fetch deadline, answered with a status other than 200, or delivered fewer bytes than it promised. The fetch keeps only a complete body. Nothing was sent.
Troubleshooting
Section titled “Troubleshooting”- Confirm the address serves the file directly with a 200 answer, without authentication or a redirect to a page.
- Serve the file quickly enough to complete within the fetch deadline, then retry the send.
- For large or slow-to-serve files, upload the bytes with POST /v1/media and send the returned upload_ref.