Aria Operations throws "Please define loadData function in object summary component" error intermittently while accessing objects. Once you click OK, Aria Operations presents the information correctly.
VMware Aria Operations 8.18.1
VMware Aria Operations 8.18.2
VMware Aria Operations 8.18.3
This issue is expected to get resolved in upcoming release. The workaround is to ignore this error by clicking OK and continue working.