Error when I activate the theme

Hi, I’m doing a clean installation of WordPress.

When I’m going to activate the Hestia Pro theme, the following error appears:

Parse error: syntax error, unexpected T_FUNCTION in /homepages/2/d373729385/htdocs/DOMAIN/wordpress/wp-content/themes/hestia/functions.php on line 42

I look at line 42 of the file but I do not see anything strange:

}
add_filter (
‘themeisle_sdk_products’, function ($ products) {
$ products [] = get_template_directory (). ‘/style.css’;

return $ products;
}
);

Does anyone know what happens?

Thanks!!!