Photos app in final cut pro
I've seen this question a few times, but cannot see the resolution - grateful for help. I cannot see the photos app content in final cut pro. I can see it in iMovie so presumably the 'system photo library' is correctly set it's greyed-out in the photos preferences. I do not use iCloud for storage of photos just an external hard drive - holding about 560 GB of photos and videos. I can see the iTunes content in the music and photos pane...just not the photos. I recently upgraded everything to Catalina - but this issue existed before I made the update to the OS System.
Any clues how I can get it back - it used to be there a couple of months ago? I thought perhaps it just needed time to build the library back up after closing down both photos and final cut pro - and also restarting a number of times - but having left it for 2 days - no photos appeared in the photos and audio side-bar pane.
Many thanks
iMac 27", macOS 10.15