Modular Pages Being Skipped Despite Existing TNTSearch Template

[thekenshow]

I have a Grav 1.7.3 site with several module pages and when I index them from the CLI I see they are being skipped and I don't understand why.

Here's an example of the modular page, marine-fire-safety, showing the header configuration and modules (_marine-contacts, _marine_customers, etc.) :

Here's the required modullar.html.twig template in the Gantry5 theme location:

Here are skipped messages being reported, including marine-fire-safety (Note the /fire-sprinkler/estimators and /fire-sprinkler/estimators/contact pages are regular pages and not modules):

At this point, EN is the only language defined for the site, but there are FR pages in place for future development.