# Bug to upgrade Eramba from 3.29.x to 3.30.x community version
**URL:** https://discussions.eramba.org/t/bug-to-upgrade-eramba-from-3-29-x-to-3-30-x-community-version/9071
**Category:** Forum - Installation
**Created:** [September 8, 2026, 12:17pm UTC](https://discussions.eramba.org/t/bug-to-upgrade-eramba-from-3-29-x-to-3-30-x-community-version/9071 "2026-09-08T12:17:24Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@telmom](https://discussions.eramba.org/u/telmom)
#### Post date: [September 8, 2026, 12:17pm UTC](https://discussions.eramba.org/t/bug-to-upgrade-eramba-from-3-29-x-to-3-30-x-community-version/9071/1 "2026-09-08T12:17:25Z")
Hello Gents
I am trying to upgrade Eramba from 3.29.x to 3.30.x, i have update the docker to support the new version of eramba but on the process to upgrade i have the error below
Upgrade: 3.29.1 → 3.30.0
Error:
**Class “Doctrine\Inflector\InflectorFactory” not found**
Migration:
20251014153021 SecurityServiceCalendarCleanupMigration
Validation:
bool(false)
Automatic rollback completed successfully.
---
### Author:  [@Adrian](https://discussions.eramba.org/u/Adrian)
#### Post date: [September 9, 2026, 3:27pm UTC](https://discussions.eramba.org/t/bug-to-upgrade-eramba-from-3-29-x-to-3-30-x-community-version/9071/2 "2026-09-09T15:27:58Z")
This scenario can happen when the docker\_app volume was not deleted and then you tried to update through the UI.
Simply complete the image switch update by deleting the docker\_app volume and run compose up again. That will trigger the migrations/update so there is no need to do a UI update for 3.30.
---
### Author:  [@telmom](https://discussions.eramba.org/u/telmom)
#### Post date: [September 10, 2026, 9:48am UTC](https://discussions.eramba.org/t/bug-to-upgrade-eramba-from-3-29-x-to-3-30-x-community-version/9071/3 "2026-09-10T09:48:56Z")
Hi Adrian
Thank you for your support, my eramba is now upgrade to 3.31.0 community version