Problems with LR Classic and PhotoSweeper

Hello!

I've run into a problem with Light Room Classic after I used PhotoSweeper to identify duplicates in my photos collection. I didn't follow through with the PhotoSweeper scan in that I didn't delete any duplicate files that it had identified. I did notice the next day, however, that many of my photos had the dreaded exclamation mark! I have been through the "Would you like to locate it?" process many times and cannot locate the original. The path that I'm presented with (to locate the original file) gets truncated. I'm not sure that makes sense, but the search process doesn't give me access to the full pathway, in fact, if I use Finder to locate the photo file by entering the full path, it returns nothing. As if the pathway is corrupted or non existent? Anyone have any ideas? The PhotoSweeper helps says that once I've "rediscovered" the correct address of one photo, then all the remaining lost files will also be found. I'm pretty sure the issue is operator error, but I just can't figure it out. Anyone have any ideas?