D [31/Oct/2016:14:15:42 +0100] [Job 519] Using image rendering resolution 1200 dpi
D [31/Oct/2016:14:15:42 +0100] [Job 519] Running command line for pdftops: pdftops -level2 -origpagesizes -nocenter -r 1200 /var/spool/cups/tmp/0096158249dac -
D [31/Oct/2016:14:15:42 +0100] [Job 519] Started filter pdftops (PID 2403)
D [31/Oct/2016:14:15:42 +0100] [Job 519] Started filter pstops (PID 2404)
D [31/Oct/2016:14:15:42 +0100] [Job 519] Usage: pdftops job user title copies options [file]
D [31/Oct/2016:14:15:42 +0100] [Job 519] The print file is empty.
D [31/Oct/2016:14:15:42 +0100] [Job 519] PID 2403 (pdftops) stopped with status 1!
D [31/Oct/2016:14:15:42 +0100] [Job 519] PID 2404 (pstops) stopped with status 1!
D [31/Oct/2016:14:15:42 +0100] [Job 519] PID 2401 (/usr/lib/cups/filter/pdftops) stopped with status 1.
D [31/Oct/2016:14:15:42 +0100] [Job 519] PID 2402 (/usr/lib/cups/backend/socket) exited with no errors.
D [31/Oct/2016:14:15:42 +0100] Discarding unused job-state-changed event...
E [31/Oct/2016:14:15:42 +0100] [Job 519] Job stopped due to filter errors; please consult the error_log file for details.