# Error when switching locale: "topic doesn't exist" message appears on all topics

**URL:** https://meta.discourse.org/t/error-when-switching-locale-topic-doesnt-exist-message-appears-on-all-topics/400784
**Category:** Support
**Tags:** ai, dynaloc, bug
**Created:** [April 16, 2026, 11:57am UTC](https://meta.discourse.org/t/error-when-switching-locale-topic-doesnt-exist-message-appears-on-all-topics/400784 "2026-04-16T11:57:05Z")
**Posts on this page:** 1
**Showing post:** 5

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### Author: ![Denis\_Kovalenko](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/denis_kovalenko/32/549496_2.png) [@Denis\_Kovalenko](https://meta.discourse.org/u/Denis_Kovalenko)
#### Post date: [April 16, 2026, 2:58pm UTC](https://meta.discourse.org/t/error-when-switching-locale-topic-doesnt-exist-message-appears-on-all-topics/400784/5 "2026-04-16T14:58:25Z")

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Issue resolved! It was caused by a stale `?preview_theme_id=6` parameter in the Chrome browser URL. Once removed, the error disappeared. Thank you for pointing that out!

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_[View the full topic](https://meta.discourse.org/t/error-when-switching-locale-topic-doesnt-exist-message-appears-on-all-topics/400784)._