Photo app is unable to handle a photo and shows '1 item' in a summary. How to identify and remove it?

Solution 1:

I've had "1 item" like you for a long time now, but I figured out how to find it.

  1. On your Mac, create a Smart album
  2. Select "Filename" "Does not include" and then list several file formats, like:
    • jpeg
    • jpg
    • png
    • gif
    • heic
    • webp
    • mp4
    • mov
    • m4v
  3. Save it

Demo smart album:

Smart album config

The "1 item" I finally found:

The 1 item

Solution 2:

I used an Investigator app on my iPad and discovered there was a pdf file in there. Then I used the Photos app on my Mac and searched for the term ‘pdf’ and the offending file was revealed. Then I just deleted it.