The image file cannot be read — it's outside the allowed working directory (`/Users/jheppler/work/chnm/pwd`) and the file itself appears to not be a valid JPEG (the first bytes `37 2c 27 49 74 65 6d 27` look like text content, possibly JSON, rather than image data). The transcription script likely encountered an issue fetching or saving the image. Check that the image download in `_transcription/transcribe.py` is writing valid binary JPEG data to the temp file before passing it here.