# ActivityPub Plugin

**URL:** https://meta.discourse.org/t/activitypub-plugin/266794
**Category:** Plugin
**Tags:** experimental, activitypub
**Created:** [May 31, 2023, 5:21pm UTC](https://meta.discourse.org/t/activitypub-plugin/266794 "2023-05-31T17:21:52Z")
**Posts on this page:** 1
**Showing post:** 410

<div class="post-metadata">

### Author: ![angus](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/angus/32/341715_2.png) [@angus](https://meta.discourse.org/u/angus)
#### Post date: [February 24, 2025, 1:46pm UTC](https://meta.discourse.org/t/activitypub-plugin/266794/410 "2025-02-24T13:46:08Z")

</div>

The reason that’s not working is because when Discourse tries to send a Follow to `a.gup.pe/u/koirat/inbox` it’s getting a 500 internal server error in response.

```plaintext
HTTP/1.1 500 Internal Server Error\r\n

```

In other words, there’s a bug in Guppe.

I would note that the collective fediverse approach to groups is currently evolving somewhat. I’m discussing it, and a few other related issues, currently with folks from NodeBB, Wordpress, Mastodon and others. See for example:

> **[1b12 vs Guppe groups](https://socialhub.activitypub.rocks/t/1b12-vs-guppe-groups/5032)**
>
> @panos brought up something interesting recently, which is that Lemmy communities don't boost everything (at least when viewed from Mastodon), but just the original post. I wasn't sure whether this was intentional (because 1b12 definitely...

The other issue that Guppe is going to face is that Mastodon itself has been working on a “Group” feature for some time which may conflict with the Guppe approach.

[https://github.com/mastodon/mastodon/pull/19059](https://github.com/mastodon/mastodon/pull/19059)

---

_[View the full topic](https://meta.discourse.org/t/activitypub-plugin/266794)._