...
When did this start happening, has anything changed since then?
Has this ever worked before, or is this something new that has been recently created?
Is this specific to one user, or do others have the same issue?
Is this affecting all categories / charts or just a selection?
What steps did you take for this to happen?
Can you send me screenshots and/or a video of this happening again?
Can I recreate the issue myself, on a local or test installation?
If I roll back to a previous version, does the issue still occur?
Are all the dashboard services still running?
If I restart the dashboard services does that resolve the issue?
Are there any errors in the log files?
Has anyone else in your support team/network teams had the same or a similiar issue previously?
Is there an issue with the Data Connection?
Can I find a video or section in a guide to help with this?
...