# Pixelfed upgrade failure - Backup can't be made

**URL:** https://forum.yunohost.org/t/pixelfed-upgrade-failure-backup-cant-be-made/41688
**Category:** Support apps
**Tags:** pixelfed, english
**Created:** [February 26, 2026, 2:22pm UTC](https://forum.yunohost.org/t/pixelfed-upgrade-failure-backup-cant-be-made/41688 "2026-02-26T14:22:02Z")
**Posts on this page:** 1
**Showing post:** 5

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### Author: ![otm33](https://forum.yunohost.org/user_avatar/forum.yunohost.org/otm33/32/11941_2.png) [@otm33](https://forum.yunohost.org/u/otm33)
#### Post date: [February 26, 2026, 4:12pm UTC](https://forum.yunohost.org/t/pixelfed-upgrade-failure-backup-cant-be-made/41688/5 "2026-02-26T16:12:00Z")

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You have to update the sury repo key.  
See

> [@Yarn and Sury APT keys issues](https://forum.yunohost.org/t/yarn-and-sury-apt-keys-issues/41617):
>
> Hi everyone ! You might have issues with your system updates wrench. Here are the usual error messages: W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://packages.sury.org/php bookworm InRelease: The following signatures were invalid: EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key W: GPG error: https://dl.yarnpkg.com/debian stable InRelease: The following signatures couldn’t be ve…

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