JIRA Dashboards Is anybody else unable to see the data using the Pie Chart Gadget?

[John Cockcroft]

I have a number of dashboards which use the Pi Chart Gadget.

They were working successfully yesterday but this morning are failing.  You are able to delete the gadget and replace it and the data is displayed until to leave the dashboard, on returning the data is blank again.

All other gadgets seem to be unaffected from what I can see.

[Wouter Bruinings]

Have you tried using the filter in the advanced search functionality to see if it is still correct? 

For example if a custom field is removed from the system, that is used in your query, the filter might fail. 

Or the query does work, but is very large and times out?