BobHartung wrote:
If you do not have a backup of the Catalog then
.... reinstall LrC (your are speaking of Lightroom Classic aren't you). Make a new catalog in a different location then go to Import. Simply select "Add" and navigate to the root directory of your image archive and select any folder. LrC should find all the images and rebuild the entire catalog. HTH
NOw we are getting somewhere. Good answer