I am trying to create a custom print service on arcgis server 10.3.1 using the export web map tool and the get layout templates info. After I run through all of the steps to create the gps service and try to use it in a web app, it doesn't work. I checked the rest endpoint and it's missing the "Export Web Map Task" under the Tasks section and it's missing the the Export%Web%Map%Task at the end of the URL. I have no idea what I'm doing wrong, any help would be appreciated.