After Upgrading OMIVV ERROR 2000000 in vCenter 6.7.0.30000

We've performed an upgrade of OMIVV to latest version "4.3.1.2821".

Afterwards, OMIVV-plugin stopped working in 2 vCenters.

In MOB, the extension is not visible. Only in "/etc/vmware/vsphere-client/vc-packages/vsphere-client-serenity" it's visible.

It looks like, that vCenter plugin was not updates while the appliance upgrade process.

File in serenity path: "com.dell.plugin.OpenManage_Integration_for_VMware_vCenter_WebClient-4.2.0.2258"

Currently, we don't have any devices in OMIVV.

Is anyone able to assist here?