The YouTube video was https://www.youtube.com/watch?v=JLX27yyDiIs
The images are on a external hard drive, which was connected when LRC opened. Could this be the problem?
Now that youtube video link is a Scott Kelby recording that covers a LOT of topics and is likely confusing to many 'newbies'. (And he has some ideas that do not agree with many power users of LrC.)
We would need to know-
1) In the Lr-Classic Folders panel- Where does LrC show your original camera files to be located.?
If you hover you mouse over a Folder in that panel it should show you the full path to the folder.
2) If there is a Question mark on a folder then LrC does NOT know where that folder is located. (Remember that LrC is a database, not a file bowser. It only knows the information you added to the catalog.)
3) Does the Folder panel show you the External disk-drive with a green light? (The green light indicates a drive is connected.)
Do you see the external drive in the folder panel with a green light?
4) Did you [Move] the original camera files to the external drive AFTER importing to Lr-Classic?
5) Where did these files exist originally ? On a camera card? On the internal hard-drive?
6) Have you looked at the link? - https://www.computer-darkroom.com/lr2_find_folder/find-folder.htm
Back to your first post- What is meant by "choked"?
Screen-clips of the LrC interface to describe a problem are always most helpful in arriving at answers.