This issue usually occurs when the Lagom Smart Order Form installation was not completed correctly or some required files are missing from your environment.
templates and modules directoriesorder.php fileThis issue may occur if the "View Cart" menu item has been renamed or modified, which prevents it from being detected correctly.
If you are using the Lagom WHMCS Client Theme, you can fix this using the built-in Menu Manager:
nav-item-cartIf you are using a custom menu, modified or another theme, you need to manually update the "View Cart" item and add the required class: nav-item-cart.