Hi,
Please open to edit shortcodes.php at /dantne/swift-framework/
Find this code:-
$icon_output = '<i class="'.$image.' sf-icon sf-icon-float-'.$float.' sf-icon-'.$size.' sf-icon-'.$color.'"></i>';
Change to :-
$image = str_replace('fa-fa-','fa-',$image);
$icon_output = '<i class="'.$image.' sf-icon sf-icon-float-'.$float.' sf-icon-'.$size.' sf-icon-'.$color.'"></i>';
Thanks
Mohammad