Apache Invalid command AuthGroupFile

On Plesk server, i get following error on error_log for a site

[Tue Apr 23 08:50:32.336220 2019] [core:alert] [pid 30457:tid 140337888573184] [client 86.243.163.203:44805] /var/www/html/.htaccess: Invalid command 'AuthGroupFile', perhaps misspelled or defined by a module not included in the server configuration

This is because authz_groupfile apache module was not loaded. To load this, run

a2enmod authz_groupfile
service apache2 restart

To verify the module is loaded, run

root@root1313:~#  apachectl -M | grep auth
 auth_basic_module (shared)
 auth_digest_module (shared)
 authn_core_module (shared)
 authn_file_module (shared)
 authz_core_module (shared)
 authz_groupfile_module (shared)
 authz_host_module (shared)
 authz_user_module (shared)
root@root1313:~#