Failed to load calendar data.

[IvchinAV]

Сайт проекта(основная страница)\Календарь сайта\Failed to load calendar data

2016-12-16 15:54:24,066 ERROR [freemarker.runtime] [http-apr-8080-exec-3] Error executing FreeMarker template
FreeMarker template error:
The following has evaluated to null or missing:
==> jsonUtils.encodeJSONString(x) [in template "org/alfresco/slingshot/calendar/eventList.get.json.ftl" at line 1, column 15]
The failing instruction (FTL stack trace):

==> ${event.location} auto-escaped [in template "org/alfresco/slingshot/calendar/eventList.get.json.ftl" at line 19, column 20]
#elseif events?exists && events?size ... [in template "org/alfresco/slingshot/calendar/eventList.get.json.ftl" at line 5, column 1]