Fatal Error when install vData v2.9.11

Hi,

I was re-install my joomla site, and then I try to install vData. There is a Fatal error:
Call to undefined method JAdminCssMenu::addChild() in /home/****/****/administrator/modules/mod_vdata_admin_menu/tmpl/default_enabled.php on line 19

Please any suggest to solve this problem?

Hello,
That's a version compatibility issue. Please renew your subscription to download the latest version of vData. It will resolve the issue.