Exclamation mark instead of photo on Mac
For several weeks I have noticed 'exclamation marks' instead of where photos should be on my Mac photos app.
I used to take pictures with my iphone 7 plus and they'd synch without problem. Once i wanted to edit them on my Mac I could do so by downloading the full resolution. I can't find any option to download the full size image from my icloud account any more.
Also videos cannot be played any more. I get the following error: "Photos cannot play this video. Do you want to try opening it in QuickTime Player?"
Photos Version 1.5 (370.42.0)
MacBook Pro (15-inch, 2.53GHz, Mid 2009)
OS X El Capitan Version 10.11.6
MacBook Pro (15-inch 2.53 GHz), OS X El Capitan (10.11.1)