# ActivityPub plugin: stack level too deep

**URL:** <https://meta.discourse.org/t/activitypub-plugin-stack-level-too-deep/354445>\
**Category:** Bug\
**Tags:** activitypub\
**Created:** [February 25, 2025, 4:20pm UTC](https://meta.discourse.org/t/activitypub-plugin-stack-level-too-deep/354445 "2025-02-25T16:20:12Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**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:** [March 24, 2025, 5:25pm UTC](https://meta.discourse.org/t/activitypub-plugin-stack-level-too-deep/354445/7 "2025-03-24T17:25:19Z")

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It was used in code that protected against duplicate activities being sent in quick succession, which some other platforms do from time to time. So if you didn’t notice anything, you’re not federating with a server that does that.

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