error importing photos

Your smartphone (or camera) recording of that LrC screen, is basically useless. I cannot actually describe how bad due to community guidelines (language)

It appears you have Windows. See the following on how to record in Windows 11:

• https://www.microsoft.com/en-us/windows/learning-center/how-to-record-screen-windows-11

Ok, one thing I think I can see in that video is that you are selecting ADD. An old, never documented bug that can occur is an oddity where using Add fails to provide an error message when a very specific issue previously occurred, That being the destination in a previous import was change outside of LrC (a folder moved, renamed, or deleted). Had you attempted COPY, a helpful error message may occur, but oddly not if you use Add. This is odd as the destination should not matter with ADD, but...

What you can attempt is to try and import one photo via Copy, making sure to change the destination before clicking on Import. Then try an import again via Add.

This should no longer be a bug, should have been fixed, but...

I give this about a 10% chance of being your issue.

Lightroom (Lr icon) or Lightroom Classic (Lrc icon)? What version NUMBER?

What does happen when you try to import photos? Describe. How far do you get in the Import process?