Gerrit server restarted, please retry.
though I did see a strange message ( might be due to git-exproll ):
Apr 08, 2016 2:29:52 AM com.google.inject.servlet.GuiceFilter setPipeline
WARNING: Multiple Servlet injectors detected. This is a warning indicating that you have more than one GuiceFilter running in your web application. If this is deliberate, you may safely ignore this message. If this is NOT deliberate however, your application may not work as expected.
We will need to monitor it and see if it has any affect
e.