# NameError: uninitialized constant ReactionsSerializerHelpers when loading topic posts

**URL:** <https://meta.discourse.org/t/nameerror-uninitialized-constant-reactionsserializerhelpers-when-loading-topic-posts/403692>\
**Category:** Bug\
**Tags:** reactions\
**Created:** [May 23, 2026, 9:46am UTC](https://meta.discourse.org/t/nameerror-uninitialized-constant-reactionsserializerhelpers-when-loading-topic-posts/403692 "2026-05-23T09:46:00Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Ethsim2](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/ethsim2/32/522255_2.png) [@Ethsim2](https://meta.discourse.org/u/Ethsim2)\
**Post date:** [May 23, 2026, 12:21pm UTC](https://meta.discourse.org/t/nameerror-uninitialized-constant-reactionsserializerhelpers-when-loading-topic-posts/403692/2 "2026-05-23T12:21:52Z")

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I have opened a pull request for this here:

[https://github.com/discourse/discourse/pull/40255](https://github.com/discourse/discourse/pull/40255)

The change moves/loads `ReactionsSerializerHelpers` so it is available before `PostsReactionLoader` references it.

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_[View the full topic](https://meta.discourse.org/t/nameerror-uninitialized-constant-reactionsserializerhelpers-when-loading-topic-posts/403692)._