Error when trying to use focus builder in 4.4.3

[rw4lll]

I’ve checked the issue. It seems there is a typo in the code.
Change in Plugins/MauticFocusBundle/Controller/AjaxController.php on line 24:
instead of $url = $request->request->get('website'); set $url = $request->get('website');

For me it has solved the problem.