Drupal 8 Bug: The module standard does not exist. in Drupal\Core\Extension\ExtensionList->get()

We just ran into the Drupal 8 CMS Error message:

Drupal 8 Bug: The module standard does not exist. in Drupal\Core\Extension\ExtensionList->get()

Issue

The issue can be found here: https://www.drupal.org/project/drupal/issues/3000677

Fix:

Updated to the latest Drupal Core Version 8.6.6 and removed the line:

$settings['install_profile'] = 'standard';
?>
from settings.php