Make reason for 'error moving posts' visible in the interface

zogstrip · February 9, 2026, 10:34am

I don’t think this is a Feature, but instead a Bug

github.com/discourse/discourse

FIX: Show specific server error when moving posts fails (#37634)

main ← fix/move-posts-show-server-error

merged 06:30PM - 09 Feb 26 UTC

ZogStriP

+6 -3

When moving posts to a new topic fails (e.g. title too short, missing required t…ags, duplicate title), the modal only shows a generic "There was an error moving posts." message. Users had to open browser dev tools and inspect the network response to find the actual reason for the failure. Use `extractError` from `ajax-error.js` to extract the specific error message from the server's JSON response, falling back to the generic message when no details are available. https://meta.discourse.org/t/393690 **BEFORE** <img width="1727" height="1461" alt="2026-02-09 @ 10 23 04" src="https://github.com/user-attachments/assets/2e5f8880-44c3-4734-92b8-f663ced64f25" /> **AFTER** <img width="1727" height="1461" alt="2026-02-09 @ 10 22 21" src="https://github.com/user-attachments/assets/8de939ef-8033-4672-ab21-1de04d1e4ec7" />

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Changing a Topic to a moderated category fails Bug	7	827	April 3, 2023
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Error Moving posts - 422 Bug	6	101	January 16, 2026
Unable to move topic OP into another existing topic Bug	6	1153	July 3, 2017

Make reason for 'error moving posts' visible in the interface

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