Don't work wiki

Don't work wiki in create or update page: 500 error. 2016-04-28_16-46-41

Step.1: Fill data 2016-04-28_16-49-16

Step.2: Click the "Create page" button and... whoops... 2016-04-28_16-51-09

PS> 2016-04-28_16-50-36