The camera is locked by another application error

[joshas]

After connecting camera (or Android smartphone) to PC, to import new photos, Shotwell displays error message:
"The camera is locked by another application. Shotwell can only access the camera when it's unlocked. Please close any other application using the camera and try again."

While this is not a huge issue for advanced user (just unmount camera from File manager and open camera page in Shotwell again), for an average user or beginner this is a huge problem and workaround adds quite a few unnecessary steps. Especially when import procedure was working correctly on earlier Ubuntu 16.04 version.

Additional information:
1) Ubuntu 20.04.3 LTS

2) shotwell 0.30.10-0ubuntu0.1

3) What you expected to happen
After connecting camera Shotwell should display "Import photos" page without errors or at least help to unmount camera in case File Manager or other application has "locked" it first.
How about adding "Unmount camera" button to same error dialog and refreshing camera page after completing unmount?

4) What happened instead
Shotwell displays error message:
"The camera is locked by another application. Shotwell can only access the camera when it's unlocked. Please close any other application using the camera and try again."

[Jens Georg (yg-jensge)]

You will get an "Unmount camera" button if shotwell knows how to unmount the camera. Apparently it failed to figure out how it is mounted, so it will show you the dialog you have seen.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.