In locations.php:
$abs_us_root: /var/www/html
$us_url_root: /portal/

Warning: require_once(/var/www/html/users/helpers/helpers.php): Failed to open stream: No such file or directory in /var/www/html/portal/users/init.php on line 21

Fatal error: Uncaught Error: Failed opening required '/var/www/html/users/helpers/helpers.php' (include_path='.:/usr/share/php') in /var/www/html/portal/users/init.php:21 Stack trace: #0 /var/www/html/locations.php(13): require_once() #1 {main} thrown in /var/www/html/portal/users/init.php on line 21