<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[Recent Friendica issue following NodeBB Activitypub groups (categories)]]></title><description><![CDATA[<h1><b>Recent Friendica issue following NodeBB Activitypub groups (categories)</b></h1><p><span><a href="/user/..%2Fcategory%2Fhelpers%40forum.friendi.ca">@<span>helpers</span></a></span></p><p>I noticed a problem that arose recently (no more than three or four months ago).</p><p>In practice, when I try to follow a NodeBB Activitypub group (citiverse.it instance) from Friendica (poliverso.org instance), Friendica doesn't recognize the group as an Activitypub actor and gives me this error message.</p><p>I'm experiencing this problem with both old and new groups.</p><p>For example, with the group <span><a href="https://citiverse.it/category/55">@<span>bluesky</span></a></span>, which is a few months old, at the link <a href="https://citiverse.it/category/55," rel="noopener noreferrer">citiverse.it/category/55,</a> it's recognized, but I can't join it. When I try to join, I get this error message.</p><p>Exception thrown in /var/www/friendica/src/Module/Contact/Profile.php:197<br />Stack trace:<br /><a href="https://poliverso.org/search?tag=0" rel="tag">#<span>0</span></a> /var/www/friendica/src/BaseModule.php(251): Friendica\Module\Contact\Profile-&gt;content()<br /><a href="https://poliverso.org/search?tag=1" rel="tag">#<span>1</span></a> /var/www/friendica/src/App.php(595): Friendica\BaseModule-&gt;run()<br /><a href="https://poliverso.org/search?tag=2" rel="tag">#<span>2</span></a> /var/www/friendica/src/App.php(190): Friendica\App-&gt;runFrontend()<br /><a href="https://poliverso.org/search?tag=3" rel="tag">#<span>3</span></a> /var/www/friendica/index.php(22): Friendica\App-&gt;processRequest()<br /><a href="https://poliverso.org/search?tag=4" rel="tag">#<span>4</span></a> {main}</p><p>With a newly created group, for example, the @wordpress@citiverse.it group at the link <a href="https://citiverse.it/category/231," rel="noopener noreferrer">citiverse.it/category/231,</a> I can't even capture it with the search function; and if I try to insert the link, it only captures the RSS actor.</p><p>What do you think the problem might be?</p><p><span><a href="/user/heluecht%40pirati.ca">@<span>heluecht</span></a></span> <span><a href="/user/julian%40activitypub.space">@<span>julian</span></a></span></p>]]></description><link>https://citiverse.it/topic/88d8baf9-5ee6-472e-b7ea-2b5a33280770/recent-friendica-issue-following-nodebb-activitypub-groups-categories</link><generator>RSS for Node</generator><lastBuildDate>Sat, 06 Jun 2026 21:27:27 GMT</lastBuildDate><atom:link href="https://citiverse.it/topic/88d8baf9-5ee6-472e-b7ea-2b5a33280770.rss" rel="self" type="application/rss+xml"/><pubDate>Sat, 06 Jun 2026 13:59:57 GMT</pubDate><ttl>60</ttl></channel></rss>