LR will see the camera, but claims there are no photos. Taking the memorycard into cardreader, there is no problem.
if i start Photoshop instead, camera and photos are found!!!
i have the LR CC version 9.1 and camera raw 12.1
about one week ago it was all fine
suppose its a bug
Since Photoshop does not encounter this problem, I consider it a LR CC bug.
I have used same cable, permanently plugged into iMac for 'years'. Had a short notion it could be dirt in camera connector, but since LR see the camera type as D 850, and Photoshop works, it is not a hardware thing in my opinion
(btw the login procedure from safari/catalina does not allow me to enter this comunity, I have to use my iPad)
A Preference File will survive a Lightroom uninstall/reinstall. Sometimes weird behavior is corrected/cured by resetting the preferences.Reset Procedure:
1. Close Lightroom.
2. Hold down [Alt/Opt]+[Shift] while restarting Lightroom.
3. Overwrite the Preferences when prompted by the dialog.
4. Close Lightroom.
5. Restart Lightroom.
Does the behavior continue after resetting the preferences?
When you install Lightroom Classic 9.1 and open it for the first time, it should ask permission for accessing the Photos app.
Did you see it?
Go to System Preferences > Security & Privacy.
In the Privacy tab, select Security.
Does Lightroom Classic has permission assigned to Photos, Full Disk Access, and Files and Folders?
Downgrading Lightroom Classic will not help.
(Though it may not work,) could you please install Lightroom Classic 9.1 again and see if there is any change?
Ideally, when you update to Lightroom Classic 9.1 and open it for the first time, you should have been asked to grant permission to access Photos.
Is there any chance that the permission was not granted unintentionally?