[CardDAV/Memotoo] Contacts sync not working

[nephros]

@nephros

Here I get an error like TCPDF ERROR: Not a JPEG file: /home/documents/server1/..../.contacts-photos/contactNNN-Name-Surname.jpg .
And indeed, this is a PNG file named .jpg.

Apparently Memotoo has a problem with this somewhere in the back.

I wonder however how this came to be. AFAIK I mostly edited my contacts, including photos, on the phone. So there may be a bug still in SFOS.