Situation :

We are in process of migration from confluence cloud to server and found issues with calendar plugin unable to let users add page as favorite. Let us know which is compatible with our confluence version .

Steps to Reproduce:

1.install Confluence 5.9.1-OD-2015.47.1-0002
2.install Team Calendar 5.3.10
3.create a page
4.insert calendar into the page
5. access Confluence using Google Chrome and click on the star icon to mark the page as Favourite

Expected Behaviour
Page will be mark as favourite

Actual Behaviour
Server error while updating favourite is thrown as shown in attachement