I'm trying to use the VPC security dashboards in splunk app for aws. They end up blank, with zeros for totals. I edited it to see the searches, and saw the error that aws_vpc_flow_logs either didn't exist or was empty. Well, if I search on that index there certainly seems to be nothing in it.
I see it's built by 3 saved searches, that do a bunch of calculations on the raw flow data, which does exist in my aws index, and then does a | collect into aws_vpc_flow_logs. I can run those saved searches and get pages of data, but nothing ever ends up in the aws_vpc_flow_logs index, and I don't get an error anywhere I can find.