Redmine

Hi all,

I used to have an old Redmine version (not installed by me, so I'm not sure regarding its version), And I wish to upgrade to 3.0.3. I executed the install procedure on a second machine, and the db used is the same db used to the old version. Looks like it's work as existing projects are loaded, but for some reason I can't access the Issues page, and some general error is displayed (/var/log/httpd/redmine_error_log and /var/log/httpd/error_log show nothing):

Internal error

An error occurred on the page you were trying to access.
If you continue to experience problems please contact your Redmine administrator for assistance.

If you are the Redmine administrator, check your log files for details about the error.

Can you assist how can I resolve this?

Thanks!