image2pnm.py failed: out , err jpegtopnm: WRITING PGM FILE
jpegtopnm: Error writing single byte sample to file
Command failed: jpegtopnm /src/astrometry/net/data/files/cached/78d/78df78091314737cd21e9ded6794f5aa8fbe4629 > /tmp/tmpepq8ok1y
Traceback (most recent call last):
  File "/src/astrometry/util/image2pnm.py", line 298, in main
    convert_image(options.infile, options.outfile,
  File "/src/astrometry/util/image2pnm.py", line 235, in convert_image
    (imgtype, errstr) = image2pnm(infile, outfile, force_ppm=force_ppm,
  File "/src/astrometry/util/image2pnm.py", line 200, in image2pnm
    do_command(cmd % (shell_escape(infile), shell_escape(outfile)))
  File "/src/astrometry/util/image2pnm.py", line 60, in do_command
    sys.exit(-1)
SystemExit: -1