Buster no release file

[kris <kris@dreamwaresystems.com>]

Long version of error message in activities software.
Unable to dowmload updates: Failed to update cache: E: the
repository /cdrom://Debian GNU/ Linux 10.10.0-Buster_-Official amd64 DVD
Binary-1 2021069-16:12 Buster Release does not have release file.  
I should note i have seperate swap var partitions.
etc/apt/source.list.d is empty. I have attached sources.list

# 

# deb cdrom:[Debian GNU/Linux 10.10.0 _Buster_ - Official amd64 DVD Binary-1 20210619-16:12]/ buster contrib main

deb cdrom:[Debian GNU/Linux 10.10.0 _Buster_ - Official amd64 DVD Binary-1 20210619-16:12]/ buster contrib main

deb cdrom:[Debian GNU/Linux 10.10.0 _Buster_ - Official amd64 DVD Binary-2 20210619-16:12]/ buster contrib main

deb http://security.debian.org/debian-security buster/updates main contrib
deb-src http://security.debian.org/debian-security buster/updates main contrib

# buster-updates, previously known as 'volatile'
# A network mirror was not selected during install.  The following entries
# are provided as examples, but you should amend them as appropriate
# for your mirror of choice.
#
# deb http://deb.debian.org/debian/ buster-updates main contrib
# deb-src http://deb.debian.org/debian/ buster-updates main contrib