python error in `gnome-manual-duplex` and nothing is printing

[bartoszek]

Tried printing a pdf with xreader from Arch:{gnome:45.2} but it seam to fail:

• Duplex printer shows up in printer selection menu:
• It accepts the job
• It shows up in cups completed jobs
• but nothing is printing and calling gnome-manual-duplex from cli throws python error:

  Traceback (most recent call last):
  File "/usr/bin/gnome-manual-duplex", line 410, in <module>
  app = App()
  File "/usr/bin/gnome-manual-duplex", line 124, in __init__
  self.JobName.add_filter(filter)
  AttributeError: 'NoneType' object has no attribute 'add_filter'