I’m having this problem on Webmin 1.561 / Virtualmin 3.87.gpl GPL.
I’m not sure if this is how I created the error, but I clicked on Webmin > Webmin Users and then selected one of the users from the list and then when the message “This Webmin user should not be edited as it is managed by the Virtualmin Virtual Servers (GPL) module. Click here to bypass this warning and edit the user anyway - but beware that any manual changes may be over-written!” came up, I clicked on the link but didn’t make any changes.
I have restarted webmin with no effect. There were no errors, however it echo the following:
$ /etc/init.d/webmin restart
Stopping Webmin server in /usr/libexec/webmin
Starting Webmin server in /usr/libexec/webmin
Pre-loaded virtual-server/virtual-server-lib-funcs.pl in virtual_server
Pre-loaded virtual-server/feature-unix.pl in virtual_server
Pre-loaded virtual-server/feature-dir.pl in virtual_server
Pre-loaded virtual-server/feature-dns.pl in virtual_server
Pre-loaded virtual-server/feature-mail.pl in virtual_server
Pre-loaded virtual-server/feature-web.pl in virtual_server
Pre-loaded virtual-server/feature-webalizer.pl in virtual_server
Pre-loaded virtual-server/feature-ssl.pl in virtual_server
Pre-loaded virtual-server/feature-logrotate.pl in virtual_server
Pre-loaded virtual-server/feature-mysql.pl in virtual_server
Pre-loaded virtual-server/feature-postgres.pl in virtual_server
Pre-loaded virtual-server/feature-ftp.pl in virtual_server
Pre-loaded virtual-server/feature-spam.pl in virtual_server
Pre-loaded virtual-server/feature-virus.pl in virtual_server
Pre-loaded virtual-server/feature-webmin.pl in virtual_server
Pre-loaded virtual-server/feature-virt.pl in virtual_server
Pre-loaded virtual-server/feature-virt6.pl in virtual_server
Pre-loaded WebminCore
When I try to access Blocked Hosts and Users, I get:
HTTP/1.0 500 Perl execution failed Server: MiniServ/1.561 Date: Sat, 3 Sep 2011 21:37:49 GMT Content-type: text/html Connection: close
Error - Perl execution failed
Can’t use an undefined value as a symbol reference at ./webmin-lib.pl line 1763.