Breadcumbs add link to tag

Solved.

In your theme-functions.php, find function tempera_breadcrumbs() and add:

if (is_tag()) {
$category = get_the_category();
echo ”.$category[0]->cat_name.”.$separator.single_tag_title(”, false);
}

Solved.

Do not edit the theme itself. First create a child theme for your changes.

Thanks for pointing that out, robgon1971.
This correction will be included in the next update.