Comment 3 for bug 1815794

> io/hpmud/model.c 532: no laserjet_mfp_m28-m31 attributes found
> in /usr/share/hplip/data/models/models.dat

Find

  [hp_laserjet_mfp_m28-m31]

in models.dat and change it to

  [laserjet_mfp_m28-m31]

The message

How do you go on?

--
Brian.