Unable to read data from the transport connection

Hello,

I have seen a other reports similar to the one I am having with no resolution. We are having 404 and transport connection failures on a number of reports. Unfortunately, the error does not indicate which datasource has the error. We have a mix of sql and web data sources and suspect the web based datasources are the issue but cant be sure. There are no error logs in either web or sql data sources and files seem to be served correctly.

Does anyone have any tips on debugging this one?

https://imgur.com/a/oqG4yqD