I've just installed Joomla 3.9.1 and getting this error in PayPlans backend.
Fatal error: require_once(): Failed opening required '/home/virtualf/public_html/administrator/includes/toolbar.php' (include_path='.:/opt/cpanel/ea-php56/root/usr/share/pear') in /home/virtualf/public_html/components/com_payplans/xiframework/base/helper/toolbar.php on line 11.
It seems that administrator/includes/toolbar.php is missing from Joomla 3.9.1. Is this a problem with Joomla or with PayPlans?