While developing a new site (local) I encounter a problem after installing the Dutch language file for K2. The user info under an article does not show the username and related items but a strange string (see attachment). I updated K2 to the latest version and I use Joomla 3.9.1 (with the right Dutch translation) and PHP 7.3.12 . Anyone with an solution to this?

Thank you for the response, however, I started with a clean install of the template, added K2, made an article and viewed it in the front end. The mismatch in the username was there without using the dutch language file. I looked into the html file and found this:

<div class="itemAuthorDetails">
<h3 class="itemAuthorName heading-style-3 visible-first"><a rel="author" href="/onzevos/index.php/<span class=" item_title_part_0="" item_title_part_odd="" item_title_part_first_half="" item_title_part_first="" item_title_part_last"="">test/itemlist/user/848-<span class="item_title_part_0 item_title_part_odd item_title_part_first_half item_title_part_first item_title_part_last">test</span>"&gt;<span class="item_title_part_0 item_title_part_odd item_title_part_first_half item_title_part_first item_title_part_last">test</span></a></h3>
<div class="clr"></div>

Somehow this piece of code is messing things up. Can you see if there is something wrong with it and maybe, how I can fix this?