Hi , 
i have created 'Top Case Drivers by SolarBot Ownership' report and added the chart as below when i create dashboard component and added its showing fine but when i refresh the dashborad 'no Data' is present. i am badly stuck on this since 2 days kindly help me on this

Note:i am doing this module on new playground and deleted all the cashe before checking the challenge

and my dash borad component looks like belowwhen i created
When i save and refresh the 'Case Drivers and SolarBot Ownership' dashboard empty data is present like below