Lightroom reports that local storage (external ssd) "contains no editable files".

For the past 8 months, I've been using an external ssd for all my photo storage and editing. But as of LR 7, I receive a terse and unhelpful report that "This folder does not contain editable files". If I drill down into the folder structure, (original->year->day), then LR sees the file and allows me to edit. I've tried everything to bring my previous workflow back, but to no avail.

MacOS 14 | M1 MacBook Pro Late 2021 | Lightroom 7.0.1