getting error when drush en drupalmoduleupgrader (MAMP) / needs a higher bootstrap level to run

getting an error when following instructions on module page https://www.drupal.org/project/drupalmoduleupgrader →

Drupal in installed locally in MAMP

drush is installed via: composer global require webflo/drush-shim

drush en drupalmoduleupgrader

Command pm-enable needs a higher bootstrap level to run - you will need to invoke [error]
drush from a more functional Drupal environment to run this command.
The drush command 'en drupalmoduleupgrader' could not be executed. [error]
Drush was not able to start (bootstrap) the Drupal database. [error]
Hint: This may occur when Drush is trying to:
* bootstrap a site that has not been installed or does not have a configured
database. In this case you can select another site with a working database setup by
specifying the URI to use with the --uri parameter on the command line. See `drush
topic docs-aliases` for details.
* connect the database through a socket. The socket file may be wrong or the
php-cli may have no access to it in a jailed shell. See