SSL Problem (migration from cpanel)

Hi,

I have successfully migrated my cpanel backup to virtualmin. then (as a root) when I want to enable ssl for this account by ticking “Apache SSL website enabled?”.
And this shows up

Changing IP address of virtual website .. .. done

Creating SSL certificate and private key …
… SSL website failed! : Failed to open /home/xxxxx/ssl.cert.webmintmp.31822 : Permission denied at …/web-lib-funcs.pl line 1493, line 1.

Updating Webmin user …
… done

Updating Webmin user …
… done

Saving server details …
… done

Applying web server configuration …
… done

Re-loading Webmin …
… done

I also try as an admin of the “virtual server”, this menu “Apache SSL website enabled?” even cant be ticked. So both cases failed (as a root and as admin). Please fix this as it can “turn off” any new user from cPanel (mostly will just ditched this panel without asking for help first).