Error: "The following files were not imported because they could not be read or the destination.."
I'm using Lightroom Classic 9.2 on macOS Catalina 10.15.3. I'm trying to import photos and videos from my iPhone XS Max/iOS 13.3.1. The import process never ends. What happens is:
- Start the import process to import ~1000 items from my iPhone attached directly via USB-C Lightning cable. The destination folder is one which Lightroom has successfully imported photos to my SD card.
- At the start of the import process, previews for a few photos are displayed initially and then none until I cancel the import.
- After a few minutes, the progress bar shows no progress.
- If I cancel the import process, an error is displayed. "The following files were not imported because they could not be read or the destination is not writable (1)"
- The error shows a number of video files that could not be imported. In this example, these files are 452,659,828MB.

- The error shows a number of video files that could not be imported. In this example, these files are 452,659,828MB.
- Generally, the import process has imported many more photos/videos than the previews indicate. The preview images don't seem to be a accurate indiactor of what's being imported. This is a bug.
- Over several imports, videos over 1GB in size have been imported from the iPhone, so sizeof the .MOV files doesn't seem to be the issue.
- The error is misleading because the destination is writable because 100s of photos have been imported in previous attempts.
For whatever reason, the import process gets stuck when importing certain videos. For example, I let one import attempt go for about 2.5 hours. Over several import attempts, I've been able to get most of the 1000 items imported. But in total, it's taken me hours to do so when it should have taken me a fraction of the time. The import process is broken:
- The progress bar doesn't accurately reflect progress. [BUG]
- It gets stuck when it encounters an error and the only way to see the error is to cancel the import. As a user, I don't know if progress is really taking a long time or whether it's stuck. [BUG]
Anyway, does anyone know what's going on here? Why can't those files be imported?
