Hi @halirob,
That is very odd indeed!
Iāll keep this topic open and if you receive any updated information through your open case, feel free to share it here for the rest of the community!
@halirob - we began experiencing this same issue in our embedded dashboards that offer users the ability to print the dashboard to PDF. Clients reported the same issue to us yesterday. QS indicates the file is generated but attempting to download errors out. I have reported a similar ticket to AWS support to raise. We are experiencing this in us-east-2 region.
After much troubleshootsing, simplifying the analysis, verifying data integrity: what resolved my issue was eliminating specific donut charts, using either heatmap or table or bar chart instead. These donuts were presenting fine in the UI, but caused the PDF export to fail. Complaints of PDF export failures started after our April 1st runs, so did not occur before.