Do some things in gradebook
Check the logs, make sure no ERRORs about gradebookng are in the logs.
There was a error log message added to addGradebook in SAK-32785 which prints every time and actually isn't an error message. This needs to be fixed.
This was an example of the message
14-Aug-2017 13:24:47.482 ERROR [http-apr-24888-exec-1] org.sakaiproject.gradebookng.business.GradebookNgBusinessService.getGradebook No gradebook in site: cc1ee287-1825-4dff-b27c-6452c2d70c03
Apply fix for GBNG to create a gradebookid when it doesn't exist