I would like to change the background color of the PI Trend web part but when I open http://server/_layouts/PI_WebParts/trend_config.aspx I see an error in red on the top saying: "At this time, the Primary PI Server for the Configuration Database is not available. Therefore, any attempt to modify the configuration may fail. " .
If I click on any other item from the menu on the left, e.g. "PI Table", I get a popup with the error "Error Reading Configuration Database: 'Object reference not set to an instance of an object.'".
What is the reason for that error?
Thanks in advance.