Never seen this but what process are you doing to cause the error?  Upgrading Veeam?  Did you check the logs?

It would be quicker to open a support ticket and have them check the logs.

Was this happening during the upgrade of Veeam Backup for Google Cloud, right?
We'd need to investigate the logs to see what happening. It's better to open a support ticket.

Hi ​@wesmrt 

Yes right, and the case has already been opened with Veeam support.

Let us know how you get on with the support case and what the solution is.

Dear Community,

Anyone face this issue if yes kindly guide how to fix this.

Failed to upgrade host components. Error: 'Exception of type 'Veeam.Backup.Common.CAppException' was thrown.'

I would say to open a support ticket.