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Whoops\Exception\ErrorException: require_once(): Failed opening required '/home/crm/public_html/modules/addons/CustomBillableItems/core/App/AppContext.php' (include_path='.:/opt/cpanel/ea-php74/root/usr/share/pear') in /home/crm/public_html/billable_items_cart.php:17
Stack trace:
#0 /home/crm/public_html/vendor/whmcs/whmcs-foundation/lib/Utility/Error/Run.php(0): WHMCS\Utility\Error\Run->handleError(64, 'require_once():...', '/home/crm/publi...', 17)
#1 [internal function]: WHMCS\Utility\Error\Run->handleShutdown()
#2 {main}