=== Command ===
curl -X POST 'https://api.vectara.io/v2/corpora/rag-eval-corpus-api/upload_file' -H 'x-api-key: $VECTARA_API_KEY' -F 'file=@02_scanned_mountain-pine-beetle_USDA-1983.pdf'

=== Captured live at 2026-08-18T22:23:53Z (re-demonstration of the scanned/image-only PDF ingestion failure) ===

{"messages":["Unable to find title and text"],"request_id":"5d09984b-8f6c-4e62-a21f-94e019ff871f"}
HTTP_STATUS:415