[image] Randomly my forum wen’t down and then when I brought it back up (rebuilt it) this is what is occuring.

A couple options to figure out which one is causing the problem: Visit the theme settings via safe mode and try previewing each theme/component until you find one that causes the problem Disable theme components one at a time and check to see if that fixes your site

First step to debugging would be checking the browser console for errors… it appears to possibly be an issue with the who’s online plugin… is it up-to-date? maybe try disabling it and see if the issue resolves [image] You can circumvent this issue temporarily and access your site by using safe mo…

Safe mode seems to only work when [image] is enabled. I disabled the whos online plugin and same issue.

@Headless I see you marked this as solved, which is great! Were you able to identify the problematic theme component? If it’s a public one, please can you let us know which it was, so we can make sure this doesn’t cause issues for other people?

It seemed to have been the following components for the theme: Topic List Previews and Custom Header Links - Theme component - Discourse Meta

Ok great, thanks! We’re debugging a potential issue over in this topic . If you have the time to try running those commands, then it might solve the problem and allow you to reenable those theme components.

I wen’t ahead and did the steps in this post: Rendering 'TypeError' with theme components after update - #10 by david I can confirm this fixed the issue, turned the components back on and no issues.

Perfect, thanks for your help identifying the problem @Headless !

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Headless (Headless) 2025 年9 月 2 日 19:12 6

它似乎是主题的以下组件：

主题列表预览
和
自定义标题链接 - 主题组件 - Discourse Meta

话题		回复	浏览量
While loading a new component on the site, the site is down Self-hosting	17	1241	2022 年10 月 30 日
Error - one thread can't be replied to Bug	5	117	2025 年7 月 26 日
Blank website after update Support	14	1657	2020 年8 月 26 日
Site broken after update Self-hosting	3	986	2021 年4 月 12 日
One admin restarted the forum while another was updating. How to fix Support	2	518	2022 年10 月 19 日

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