merged and backported: https://github.com/ManageIQ/manageiq/pull/9938
Verified in 5.6.1.2. Tried URL: APPLIANCE_IP/ems_container/show_list?page=0&refresh=y and page was rendered without errors.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHSA-2016-1634.html