upgrade – Drupal 8 modules inside the profile are not listed in the extension page

After the upgrade, the base modules from 8.5.15 to 8.6.15 are not included in the extension page.

My module is present in docroot / profiles / custom / myprofile / modules / mymodule

But there is no need to list and while doing updb drush get an error message stating that mymodule is missing.