nanoDLP

can anyone tell me what these  log messages mean?

Warning    14    2019-09-16 16:48:05.794933    Image    Display layer public/plates/11/14.png

and

Error    16    2019-09-16 16:49:19.564718    Gcode    External Call Problem exit status 1 TOKEN is unset or empty: Did you create /etc/pushover.conf or specify -T on the command line?