Error "undefined method [] for nil:NilClass (NoMethodError)" after upgrade

Technical assistance
1

Infos:

  • Used Zammad version: 6.5.0
  • Used Zammad installation type: (source, package, docker-compose, …): package
  • Operating system: Ubuntu 20.04.6
  • Browser + version: Firefox 138.0.1

Expected behavior:

Zammad should start

Actual behavior:

When accessing the web interface, I get error: "Status code 500
undefined method `’ for nil:NilClass

production.log shows:

E, [2025-05-07T16:06:26.519153#814-197080] ERROR – : undefined method []' for nil:NilClass (NoMethodError) app/controllers/sessions_controller.rb:320:in config_frontend’
app/controllers/sessions_controller.rb:19:in rescue in show' app/controllers/sessions_controller.rb:12:in show’
app/controllers/application_controller/handles_transitions.rb:16:in `handle_transaction’

Steps to reproduce the behavior:

2

Updated to 6.5.0-1746624096.1f7ec9fc.focal which was available in mean time fixed the issue

3

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