One further piece of information - the field I am trying to add to the widget is an x-axis date field (2022), which is configured and linked properly. Other date fields (2021, 2020) work.
Thanks for any suggestions.

Hi Linda2021 ,
Sometimes when we are creating with a big chunk of data this issue occurs, try to filter out small data e.g. may be set end date to this month and map your widget. Once the data is displayed you can change the filter.