One of the sites from our client got some nasty mail-scripts, we've cleaned those scripts and upgraded Wordpress from 3.1 to 4.2.
Now we have the following issue with our template, the files are not loading. The reason is a Wrong get_template_directory_uri(); URL.
It is a Wordpress Multi-Site, the file url now is: http://example.com/beauty/wp-content/themes/beauty/assets/css/style.css
But it is supposed to be: http://example.com/wp-content/themes/beauty/assets/css/style.css
Are there any ways to fix this issue? My php-knowledge is minimal, some ideas are appreciated!
Kind regards.