Upgrading Webmin from 1.890 to 1.900 on a VirtualBox instance with Ubuntu 16.04.5, with a licensed Cloudmin install - not yet configured for use, new install. Its an intranet install.
HTTP/1.0 500 Perl execution failed Server: MiniServ/1.900 Date: Sat, 17 Nov 2018 12:56:34 GMT Content-type: text/html; Charset=iso-8859-1 Connection: close
Error - Perl execution failed
Can't use an undefined value as a HASH reference at /usr/share/webmin/authentic-theme/authentic-lib.pm line 1197.
The error shows up in the Dashboard function as webmin loads up, and usually shows the 4 gauges and other system info. Other screens, such as System -> Bootup and Shutdown, Server -> SSH Server works, I could not find anything else broken.