14 August 2019
I received again the synchronization error. Solved again by de-selecting - again! - Carddav.
And it is for exactly the same issue as before:
(printscreen taken 2 hours ago):
I know that I did not touch the phone as it was linked by usb on my desktop (hence always fully charged), and I was away 3 days without it (and with no one accessing my place): it was simply store there, alone in the dark…
There is something that triggers Carddav, but what ? … a mystery
(edit : all updates are manual, never auto. However, I recall having authorized several manual updates: an Android system update about “WebView”, “Booking”, “Visorando”, “Meteo France” and “Firefox”)