Clicking on posts in sub-directory takes readers to root

I have my main blog at https://www.andthesethygifts.com

I have a sub-blog at https://www.andthesethygifts.com/learning

Two separate WP installations, one database.

I can do a search on the “learning” folder for posts, but when you click on the result you get taken back to the root (andthesethygifts.com).

How do I fix this? Thanks.