If the [pa_indicator_breakdowns] table is populated with invalid indicator-breakdown relationship links (with the indicator or the breakdown fields empty), the PA Indicator REST API will return an invalid response.
Steps to Reproduce
As a workaround on earlier versions, delete the invalid records, then the widget should refresh with no error. Also make sure that there are no duplicate indicator-breakdown relationships. If the instance is domain-separated, do not delete duplicates, but check with SN support.
Related Problem: PRB1293827