The logo URL was already set in Appearance > Customize > Site Identity
As I suspected, clicking on the upload button and uploading another copy of the image fixed the problem. You have a bug where it ignores a URL that is typed into the field.
I don’t think it has anything to do with my WP being in a separate directory but of course anything is a possible. FYI, this is documented by the WP Codex (search on “Putting WordPress in its own directory”) so it’s not anything I came up with on my own.
Sure.
The logo URL: https://webenso.com/wbb/wp-content/uploads/2018/08/webenso-favicon.png
I’m not sure how to attach a screenshot. But here’s dropbox link: https://www.dropbox.com/s/9n5xpejvzdj04vu/logo-example-error.png?dl=0
I’m wondering I should just upload another copy of the image to “prompt” the plugin to include the URL in the schema.