Important: If you are a Zammad Support or hosted customer and experience a technical issue, please refer to: support@zammad.com using your zammad-hostname / or company contract.
Used Zammad version: 2.6
Used Zammad installation source: (source, package, …) rpm
I’m new to Zammad but whenever I got this error, I either misconfigured the file /etc/nginx/conf.d/zammad.conf or I wasn’t patient enough after executing zammad restart . Did you check the logs?