difficulty restoring from an earlier version

[Lynn Underwood via Any discussion of rdiff-backup]

I'm having difficulty restoring my /var/www/html rdiff-backup increment 
as of March 4:

eric@fedora:/run/media/eric$ sudo rdiff-backup restore --at 2025-05-04 
"run/media/eric/backup 202025-02/XPS-2025-02/var/www/html" /var/www/html
[sudo] password for eric:
WARNING: Server will be called with deprecated command line interface to 
guarantee compatibility. It might lead to a deprecation warning from 
newer rdiff-backup versions. Use '--api-version 201' (or higher) to 
avoid it.
ERROR: Path 'run/media/eric/backup 202025-02/XPS-2025-02/var/www/html' 
couldn't be identified as being within an existing backup repository
ERROR: Action restore failed on step check


I'm using 2.2.6 on Fedora 42. The rdiff-backup-data directory shows a 
backup on 2025-05-04.

What am I missing?

Thanks