bug in latest version 5.06GPL?

Hiya,

dunno if this is the right forum to post this…
Just upgraded to the latest version and got an err when I want to create a new vhost.

Operating system:Debian Linux 7
Webmin version: 1.831
Virtualmin version: 5.06

On “Create Virtual Server” :

Initial website content
HTTP/1.0 500 Perl execution failed Server: MiniServ/1.831 Date: Tue, 21 Feb 2017 08:53:14 GMT Content-type: text/html; Charset=iso-8859-1 Connection: close
Error - Perl execution failed
Undefined subroutine &virtual_server::content_style_chooser called at /usr/share/webmin/virtual-server/domain_form.cgi line 655.

Hello,

I have 5.07 version and I have the same error when I try to create a virtual server un der Initial website content:

HTTP/1.0 500 Perl execution failed Server: MiniServ/1.840 Date: Fri, 19 May 2017 07:56:50 GMT Content-type: text/html; Charset=iso-8859-1 Connection: close
Error - Perl execution failed
Undefined subroutine &virtual_server::content_style_chooser called at /usr/share/webmin/virtual-server/domain_form.cgi line 655.

Anybody knows why and how to fix it? Can I disable Initial website content to see if the problem is fixed?