Looks like a bug. Has this happened after upgrading a browser or making any changes to the CM or after deleting a WAE device from CM? There is a known issue where after deleting a WAE device CM page doesn't show any devices. Reload of the CM resolves the issue.
CSCtu31886: No Data shown after deleting WAE from CM
A permanent software fix for this defect is in 5.0.1 and higher. The workaround is to
reload the CM.
Introduction This article will help you understand the steps on how to
download the UCS licenses from the Cisco Systems website and then
installing it on the UCS. The redacted (blue lines) just covers up
certain numbers for privacy please do not take them...
Introduction This article will help you understand and educate the
customer on how to clear their "expired licenses"
(license-graceperiod-expired) from their UCS-M. If a customer just
purchased a license and needs a step by step guide on how to download
With Vignesh R. P.Welcome to the Cisco Support Community Ask the Expert
conversation.This is an opportunity to learn and ask questions of Cisco
expert Vignesh R. P. about the Cisco® Nexus 7000 Series Switches and
support for the Cisco NX-OS Software platf...