Like any other web based service, start from the top.
What version of chef are you running?
What''s the base operating system?
How did you install it? (RPM package from Opscode, gem instlalation, or what?)
Since chef by default runs as a web service on port 443, do you have another web server running?
Are your chef clients still working?
From: Eduardo Dias [email@example.com]
Sent: Tuesday, November 12, 2013 4:42 AM
Subject: [chef] Chef WebUI doesn´t work
the WEBUI of my Chef server is not working, showing the error “We’re sorry, but something went wrong.”, the commands knife works. What I can see is that the clients “chef-validator & chef-webui” are not there.
How can I recover it?