Zammad Upgrade failes from 2.9 to 3.6

Hello There,

i am new here in Github and i am searching for help to Upgrade Zammad.

I am not an expert in coding, only a little bit experienced in installing linux/zammad.

The main Problem is the Login after a Zammad Upgrade. It shows an “ID Error” for my all my users.


  • Used Zammad version: 2.9.0 → 3.6.0
  • Installation method (source, package, …): source
  • Update Method: package
  • Operating system: ubuntu 18.04
  • Database + version: postgresql
  • Elasticsearch version: elasticsearch 5.6.16
  • Browser + version: Firefox 87.0, Edge 89.0.774.75, Chrome 89.0.4389.114

Expected behavior:

Updating via source from 2.9.0 to 3.6.0 should be possible.

Actual behavior:

Upgrade doesn’t work due to new dependencies

After Update, Login is not possible

grep “Error ID” /var/log/zammad/production.log

Steps to reproduce the behavior:

Following the Update Documentation

I Also tried to install a new Ubuntu 20.04 and backup the Database from Zammad 2.9.0

Your database migrations did not finish successfully.
Big version jumps can be a bad idea some times.

You can try to run these migrations manually by running rake db:migrate.

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