check the license box in the Licenses section ... move the user into the group list in the Users and Groups section ... must be " licensed " to log in -- check the license box in the Licenses section at the bottom of the Users tab ... creating a resource does create a user account; however, the account will not be " licensed " and will not be "active"
When you look at the Task Burndown Chart you get error "Failed to render the chart Estimated hours must be positive number" if you create a sprint with a task in it and then move all the items from the sprint. In other words if you create a new sprint and don't put any stories or tasks in it and then go look at the Task Burndown Chart the chart just is blank and looks as expected.
You will get this error if you try to move an SBM item with the report mover with a Sprint selected on the Right side of the screen as the target in the drop down. The purpose of the report mover tool is to move items into Product Backlogs, Release Backlogs or Backlogs under a Product and not straight into a Sprint. After moving the items to one of these backlogs you would then use Agile to put the items into Sprints.
Without pushing any of them over to the right like they are active go into the Agile UI and look at the Users & Security screen. All the users will be in the list and when you click on each one the Active box is checked giving the impression they are using a license . This checkbox should be unchecked for any user that isn't active in the admin tool as well.