# Bug? forum issues

**URL:** https://meta.discourse.org/t/bug-forum-issues/403672
**Category:** Support
**Created:** [May 22, 2026, 10:25pm UTC](https://meta.discourse.org/t/bug-forum-issues/403672 "2026-05-22T22:25:22Z")
**Posts on this page:** 1
**Showing post:** 4

<div class="post-metadata">

### 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, 2:24pm UTC](https://meta.discourse.org/t/bug-forum-issues/403672/4 "2026-05-23T14:24:25Z")

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There seem to be two different things in those logs.

The `ActionView::Template::Error` / `Propshaft` lines about a missing `chunk...js` asset may explain why this happened immediately after “update all” and then worked in a new tab. That looks like an old tab trying to load an asset filename that no longer exists after the update/rebuild.

The separate line:

```plaintext
NameError (uninitialized constant ReactionsSerializerHelpers) app/serializers/post_stream_serializer_mixin.rb:31:in 'PostStreamSerializerMixin#post_stream'

```

looks like the bundled discourse-reactions issue I reported here:

> [@NameError: uninitialized constant ReactionsSerializerHelpers when loading topic posts](https://meta.discourse.org/t/nameerror-uninitialized-constant-reactionsserializerhelpers-when-loading-topic-posts/403692/1):
>
> my Discourse version is 2026.5.0-latest.1 ([fbcbdc46d8](https://github.com/discourse/discourse/commits/fbcbdc46d816861425738b4c8bd39cca4605188d)) I am seeing repeated /logs errors when loading topic posts. The error appears to come from the bundled discourse-reactions plugin while serializing the post stream. The site reports the message as 8 copies reported. I checked the compare range below, but it does not look like it touches the failing backend code path, so I am reporting this separately: play_button Error message from /logsplay_button Backtrace from /logs What appears to be happening The er…

I also opened a PR here:

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

So I would treat the Propshaft asset error as likely stale-tab/update fallout, and the `ReactionsSerializerHelpers` error as a separate backend reactions-plugin issue.

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_[View the full topic](https://meta.discourse.org/t/bug-forum-issues/403672)._