# Topic published on 'Invalid date' with ActivityPub

**URL:** https://meta.discourse.org/t/topic-published-on-invalid-date-with-activitypub/360228
**Category:** Bug
**Tags:** activitypub
**Created:** [April 3, 2025, 1:16pm UTC](https://meta.discourse.org/t/topic-published-on-invalid-date-with-activitypub/360228 "2025-04-03T13:16:47Z")
**Posts on this page:** 1
**Showing post:** 1

<div class="post-metadata">

### Author: ![NateDhaliwal](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/natedhaliwal/32/313494_2.png) [@NateDhaliwal](https://meta.discourse.org/u/NateDhaliwal)
#### Post date: [April 3, 2025, 1:16pm UTC](https://meta.discourse.org/t/topic-published-on-invalid-date-with-activitypub/360228/1 "2025-04-03T13:16:47Z")

</div>

> [@Topics made with ActivityPub don't have a category?](https://meta.discourse.org/t/topics-made-with-activitypub-dont-have-a-category/360221/1):
>
> I don’t know what’s going on, or what ActivityPub even is, but I think that is what causes this issue: [This topic](https://meta.discourse.org/t/content-warnings-are-ignored-in-topic-title-generation/360210) does not have a category, only a tag. Surely this is not intended?

In that topic, the topic says ‘Topic was published via ActivityPub on Invalid date’.

See this screenshot:

 ![This image shows a Discord server topic titled "Topics made with ActivityPub don't have a category?" that is currently labeled as "Bug" and was posted on an invalid date, with the account name NateDhaliwal. (Captioned by AI)](https://global.discourse-cdn.com/meta/original/4X/1/f/a/1faa0f5ac957be5de07c8fa0411b6abd5f15a398.jpeg)

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_[View the full topic](https://meta.discourse.org/t/topic-published-on-invalid-date-with-activitypub/360228)._