Photos.app won't import because of permissions problems

I found the fix!

Turned out even though the Finder.app showed that my files had the correct ownerships and permissions (o/p), somehow their ownerships got screwed up probably when I installed a fresh Catalina (to save space, an upgrade bloated the system). Finder reported the files belonged to me, but when I duplicated them, the owner was reported 2x me (my username got listed twice as the user that had RW permissions). Recheck the o/p via Terminal.app showed I only had a permission to write and no access to others.

ls -al /path/to/folder

Correct o/p files to make them read-writeable to you as the owner, and readable only to others

sudo find /path/to/folder -type f -exec chmod 644 {} \;

Now some of you way also have whacked up folders o/p. You can use this command to make them read-write-executable to owner, and read-executable only to group and others

sudo find /path/to/folder -type d -exec chmod 755 {} \;

I tried starting afresh, created a new library but the problem persisted. Screenshot included:

My drives:

• Catalina and its apps: disk2s1, APFS, mounted on "/"
• Photo library and files: disk1s2, Mac OS Extended (Journaled), mounted on "/Volumes/name/" (ownerships and permissions turned ON)

When importing files located inside "/", it worked.

Could this be a problem? Why now? It worked on previous OSes.

UPDATE

When importing files located inside "/", it worked. Seems like either a bug (or a fix of what used to be a 'helpful' bug) that's new to Catalina cause I never had any problem with previous OSes.

I sure hope apple comes with a fix that benefits us who use more than one drives. Some of us can't afford upgrading to the latest and the bestest that comes with a multi TBs SSD.