After a fresh install of Ubuntu 22.04 and VirtualMin I tried to restore some WordPress sites to my new server. Created a backup on the old server. Next logged into the new server and in VirtualMin navigated to VirtualMin -> Backup and Restore -> Restore Virtual Servers. On this page I got the error as shown below.

HTTP/1.0 500 Perl execution failed Server: MiniServ/2.021 Date: Fri, 21 Apr 2023 07:11:21 GMT Content-type: text/html; Charset=utf-8 Connection: close

ERROR — PERL EXECUTION FAILED
Undefined subroutine &virtual_server::can_use_gcloud_storage_creds called at /usr/share/webmin/virtual-server/cloud-lib.pl line 304.

Not sure what causes this but it has something to do with the google cloud sdk not being installed on the server i suspect. I do not need this so I opend the cloud-lib.pl file in folder /usr/share/webmin/virtual-server/ and modified the perl code as a work around. Replace the function cloud_google_get_state with the definition below:

sub cloud_google_get_state
{
   return { 'ok' => 0 };
}

Next wait for a fix from VirtualMin.