package:lightdm:1.30.0-0ubuntu4~20.04.2
Setting up lightdm (1.30.0-0ubuntu4~20.04.2) ...

Configuration file '/etc/pam.d/lightdm'
 ==> Modified (by you or by a script) since installation.
 ==> Package distributor has shipped an updated version.
   What would you like to do about it ?  Your options are:
    Y or I  : install the package maintainer's version
    N or O  : keep your currently-installed version
      D     : show the differences between the versions
      Z     : start a shell to examine the situation
 The default action is to keep your current version.
*** lightdm (Y/I/N/O/D/Z) [default=N] ? dpkg: error processing package lightdm (--configure):
 end of file on stdin at conffile prompt