Yeah I don't think it makes any sense to debug ver.5.6.0 while digikam is at 6.3.0 already...
I would try using the official appimage.
Sent from my Samsung Galaxy smartphone.
-------- Original message --------
Date: 2019-09-20 4:15 a.m. (GMT-07:00)
Subject: Re: [digiKam-users] Crash on face recognition scan
Also, try to use a newer version of digikam. In the official website you can
find them in appimage format.
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Sent from: http://digikam.1695700.n4.nabble.com/digikam-users-f1735189.html