The job's result was requested before the job finished. 409, Retry-After: 2; long-poll the job instead.
OPDC API error code
JOB_NOT_DONE
HTTP status 409
The API answers with a problem document (RFC 9457) whose type is https://twinn.engineering/errors/job-not-done, and with X-Error-Code: JOB_NOT_DONE. Branch on the code, never on the detail text.