I'm wondering if anyone has seen this error as it appears on a Dashboard? I followed the instructions of the Download Data help page. I have a feature layer view that my List element is referencing. I set the data download option both in the layer Settings and in Dashboard. However, when I select from the list, then click the download button I see that error.
I must have muddled the data during testing, because the download worked fine at first. The only suspicious thing I'm seeing is the feature layer that the view is created from is not visualizing in AGOL. I can't explain that either?