<a class="lightbox" href="https://d11a6trkgmumsb.cloudfront.net/original/4X/8/0/3/803d3bcf5a8ee9b6d90b9cc4e7ca69f0dd066336.png" data-download-href="/uploads/short-url/iisj8wPlnJ0ESYkFtLv1lZXAIEC.png?dl=1" title="I'm sorry, but you have not provided an image for me to analyze and describe. Please upload an image and I will be happy to describe it in a single sentence. (Captioned by AI)" rel="noopener nofollow ugc">[I'm sorry, but you have not provided an image for me to analyze and describe. Please upload an image and I will be happy to describe it in a single sentence. (Captioned by AI)] I’m encountering an issue where I’m unable to view the edit history of topics on my forum. When I click the pencil icon …

If you talk about it like this, I don’t think you will get the answer. Or you can try to back up app.yml and then make a copy of it app.yml delete all the plugins in it, and then refactor the website to see if it’s a plugin problem. If so, then arrange the plugins. I’d suggest you send out the list …

You can enter the website security mode in www.you-website.com/safe-mode way, then disable the plugin or theme component, check whether it is their problem, if not, enter the log in a www.you-website.com/logs way, and publish the log information

Thank you for your suggestion. I followed your advice and entered safe mode using www.you-website.com/safe-mode . I disabled plugins and theme components, but the issue persists. It doesn’t seem to be related to plugins or theme components. I also checked the logs at www.you-website.com/logs as you …

Just to check, you’ve updated recently right? I remember there was an issue here on Meta with infinite loading edit histories for a while…

[image] Firepup Sixfifty: I remember there was an issue here on Meta with infinite loading edit histories for a while… That one has not been fixed yet. [image] Endless loading of post history when latest revision is hidden/inaccessible Bug When I click t…

After entering logs, there is a clear option in the lower right corner, click Clear all logs first, and then go to the edit history page where you have an error, visit it again, and finally refresh logs to view the latest logs, and copy the log with the red x on the left to send it here

When I click on the edit history, the following errors appear: In the server log, this error occurs: Psych::DisallowedClass (Tried to dump unspecified class: ActiveRecord::Associations::CollectionProxy) Message (6 copies reported) Psych::DisallowedClass (Tried to dump unspecified class: ActiveRe…

Yes, I’ve made sure to update to the latest version. The issue persists even after updating.

[image] slower: rsvp.js:23 Uncaught { jqXHR: {…}, textStatus: 'error', errorThrown: '' } This does look like the error in the bug topic linked above - Endless loading of post history when latest revision is hidden/inaccessible We don’t have the staff alias plugin here, so I’m not sur…

Thank you for your suggestion. I followed your instructions to uninstall the Discourse Staff Alias plugin, but the issue still persists. Here are the logs and the error messages from the developer tools: In the server log, this error occurs: Message (11 copies reported) Psych::DisallowedClass (…

However, it seems that the official forum does not have this issue. I’m not sure when this problem started.

Unable to View Edit History - Continuous Loading Issue

Support

joo (slower) August 1, 2024, 4:13pm 18

Thank you for your help! I followed your recommendation and discovered that the problem was indeed caused by a plugin. Specifically, the issue was with the Tickets Plugin 🎟 plugin.

Topic		Replies	Views
Clicking on the edit history returns 'The requested URL or resource could not be found.' Support	10	153	December 29, 2025
Endless loading of post history when latest revision is hidden/inaccessible Bug revisions , fixed	12	574	April 20, 2026
Edits not displayed and timing out Bug fixed	12	304	November 9, 2024
Server Error accessing topic revisions on a specific topic Bug rest-api	13	157	December 2, 2024
On edit: Internal Server Error due to plugin Support	3	1431	January 4, 2019

Unable to View Edit History - Continuous Loading Issue

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