I have 2 pie charts on one of my dashboards. Every so often, it would throw an error "Looks like we can't show you the content of this gadget due to its configuration (An error occurred while generating the response). Sometimes, it would come back after a few minutes. Sometimes, it would take a couple of hours or doesn't come back at all. I use the same gadget on other dashboards and it works just fine. Anyone has any idea why? Thank you!