Updating prepared settings..PHP Fatal error: Class 'notifications' not found in /usr/src/freepbx/amp_conf/htdocs/admin/librarie

FreePBX Installation / Upgrade
1

CentOS6 x64

Updating prepared settings…PHP Fatal error: Class ‘notifications’ not found in /usr/src/freepbx/amp_conf/htdocs/admin/libraries/utility.functions.php on line 1364

What im i doing wrong?