Views under Flow Dashboard (Flow Stattistics, Top Conversations) not populating after upgrade to 21.2.4/21.2.5 these are newly seen in DX Netops Performance Management 21.2.4/21/2/5
Release : 21.2.4<->21.2.8
Component : PERFORMANCE MANAGEMENT INTEGRATIONS
The Dashboard in question is part of a beta feature in and will be blank by default as noted here.
https://techdocs.broadcom.com/us/en/ca-enterprise-software/it-operations-management/performance-management/21-2/release-notes/features-and-enhancements_pm2124.html#concept.dita_ec00d7c9-cab1-4823-bcfe-74508e0c4ad7_flow
https://techdocs.broadcom.com/us/en/ca-enterprise-software/it-operations-management/performance-management/21-2/using/advanced-traffic-engineering/flow-dashboards.html