# FKB Pro - Sociaal thema

**URL:** https://meta.discourse.org/t/fkb-pro-social-theme/234323
**Category:** Theme
**Created:** [28 juli 2022 om 20:58 UTC](https://meta.discourse.org/t/fkb-pro-social-theme/234323 "2022-07-28T20:58:41Z")
**Posts on this page:** 1
**Showing post:** 492

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### Author: ![secretheartgcn-hub](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/secretheartgcn-hub/32/552294_2.png) [@secretheartgcn-hub](https://meta.discourse.org/u/secretheartgcn-hub)
#### Post date: [25 april 2026 om 14:59 UTC](https://meta.discourse.org/t/fkb-pro-social-theme/234323/492 "2026-04-25T14:59:45Z")

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Hello, after updating Discourse to v2026.4.0-latest — Ember v6.10.1, an error occurred, making the forum unusable:

client-error-handler.js:109 [THEME 28 ‘FKB Pro theme’] Error: Could not find module `ember-this-fallback/this-fallback-helper` imported from `(require)`  
at loader.js:247:1  
at a (loader.js:258:1)  
at requireModule (loader.js:24:1)  
at Object.lookup (app.js:36:12)

We hope this can be fixed.

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_[View the full topic](https://meta.discourse.org/t/fkb-pro-social-theme/234323)._