Exclamation Point instead of Photo on Photos for Mac
Dear all,
I have recently bought an iPhone X and own a MacBook Pro. Both are updated to the latest softwares.
My photo stream/ photo library automatically synchronise from my iPhone to my Photo App on Mac. The recent photos I have taken on my iPhone are uploaded onto my MacBook library. However, while I can see the photo in the icon format, once I click on it to view it a grey exclamation mark in a grey triangle appears (see below).
Has anyone had this problem before? If so how can I solve it? I am worried about losing my photos.
Thank you!
MacBook Pro, OS X El Capitan (10.11.6)