Problems after update to WP 4.3

After i updated to WP 4.3, this text is repeated through the page:

in /customers/4/5/2/storaord.se/httpd.www/wp-includes/functions.php on line 3457 Notice: Den anropade konstruktormetoden för WP_Widget har fasats ut sedan version 4.3.0! Använd istället
__construct()

Hi,

Yes, WP changed constructor from version 4.3, old constructors will continue to work and this is just Notice. You can edit wp-config.php file in order to change
define('WP_DEBUG', true);
to
define('WP_DEBUG', false);
and notices will be gone.

We will change constructors in next theme update. If you wish you can fix this by yourself by changing following code:
parent::WP_Widget http://screencast.com/t/bMOBxRttAqwH
to
parent::__construct http://screencast.com/t/aEEd5zDbYe
for files located inside theme folder / widgets and notices will be gone.

Best Regards