Package: deluser While I was removing www-data user from root group it throw error at /use/share/perl5/Debian/AdduserCommon.pm line 143
Error : invalid characters in input string I suggest that the "-" character or any other required characters should be added in $pattern variable at line 132 I am using Debian 14/16 forky/sid mix version with Ubuntu 25.10 having Linux Kernel 6.17.0-6-generic ( Ubuntu 25.10 .iso )

