Photos on my iMac keeps quitting

Hi

First - as a workaround until the problem is solved, can you use the image capture app to get the photos from your phone to a folder, and then import from there.

Next please try the following:

1 - Create a new empty library and try with that library open

2 - Try booting in safe mode - does it still happen?

3 - Try creating a new user account and try when logged into that account.

These checks will tell us if the problem is system wide, or linked to a particular library or user account.

I would try Tony's first suggestion "Use Image Capture" first.

By trying with a different application "image Capture" you can check, if the iPhone or the images on the iPhone are the problem or Phots for Mac or your current Photos Library. It will help to isolate the issue you are having with the iPhone and downloading to your Mac.

If Image Capture can download from the iPhone, you can check, if the images or videos from the iPhone are readable on your Mac.

If even Image Capture cannot download from the iPhone, you are having a more general problem with the iPhone, the cable, lack of storage, or permissions in your user account.