RAW images can't be imported to the newest LR

I have the latest LR updates installed on my LR. And after installation my old work (galleries with all the photos has gone from the view panel).

If I want to open any RAW photos from the photo session and re-edit again, such like I did edit in 2017... Actually, with this newest update, the new RAW files import is not allowed.

All images were photographed with a Canon 5D III camera.

 

Any advice will be greatly appreciated.

 

Thank you!

Joana