Error after submitting (Error - File not found)

Hi, after submitting any form at Virtualmin Ive got "Error - File not found"

Like at form:

Error leads to:

It seems that /aaa/ sends for to /aaa/aaa/ ("aaa" is a virtualmin directory).

Do you know where to change correct path to virtualmin to avoid those dual-directory issue? Note also that form is send (data are changed), but result leads to 404 like this.


Operating system CentOS Linux 6.5 Webmin version 1.680 Virtualmin version 4.06.gpl GPL Theme version 8.7