package:isc-dhcp-server:4.4.1-2.1ubuntu5.20.04.5
Installing new version of config file /etc/apparmor.d/usr.sbin.dhcpd ...
/var/lib/dpkg/info/isc-dhcp-server.config: 2: /etc/default/isc-dhcp-server: 
: not found
dpkg: error processing package isc-dhcp-server (--configure):
 installed isc-dhcp-server package post-installation script subprocess returned error exit status 127