Enfold Update breaks Additional Google Fonts

Hey I just updated Enfold from 3.8 to 4 and now my google fonts I added are not working in the functions.php. If I add them I get a HTTP 500 Error.
I used to use this script:
/* Additonal Google Fonts */

add_filter( ‘avf_google_heading_font’, ‘avia_add_heading_font’);
function avia_add_heading_font($fonts)
{
$fonts[‘Unica One’] = ‘Unica One’;
$fonts[‘Satisfy’] = ‘Satisfy’;
$fonts[‘Roboto Slab’] = ‘Roboto Slab:100,400,700’;
return $fonts;
}

add_filter( ‘avf_google_content_font’, ‘avia_add_content_font’);
function avia_add_content_font($fonts)
{

$fonts[‘Roboto Slab’] = ‘Roboto Slab:100,400,700’;
return $fonts;
}

Any idea how I can get it back working?
Thanks.