Among a few photos taken on Nexus 4 phone, one of the photos is unviewable.

[AC Question]

Among a few photos taken on Nexus 4 phone yesterday, one of the photos was unviewable on the phone. The rest photos were fine. Error message was "couldn't load photo". The photo file had no Thumbnail image (just a blank square in that space). Right clicking on the photo showed the property of this photo as a 1.5MB jpg file. I connected the phone to a computer with USB cable, still could not open to view it. This file also could not be copied to computer either. Error message was "The library, drive, or media pool is empty".

This is a photo I really want to view and keep. How to fix it?

Thanks!