Webalizer reporting failed

When creating a new virtual server, everything works ok except Webalizer:

Webalizer reporting failed! : Failed to open /home/jo/domains/wolsan.de/public_html/wolsan.de/webalizer/.htaccess.webmintmp.16845 : No such file or directory at /usr/share/webmin/web-lib-funcs.pl line 1323, line 1.

I guess I need to add an empty "webalizer" directory somewhere in a template, but what would be the right one?

(The error occurs regardless of whether it's a first server for a new user, or a subserver for a pre-existing user.)