Unable to get updates--error occured

[Narender Rao]

#cat /etc/apt/sources.list
###### Ubuntu Main Repos
deb http://us.archive.ubuntu.com/ubuntu/ bionic main restricted universe multiverse

###### Ubuntu Update Repos
deb http://us.archive.ubuntu.com/ubuntu/ bionic-security main restricted universe multiverse
deb http://us.archive.ubuntu.com/ubuntu/ bionic-updates main restricted universe multiverse
deb http://us.archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse

###### Ubuntu Partner Repo
deb http://archive.canonical.com/ubuntu bionic partner
“ndeb http://downloads.sourceforge.net/project...ozilla/apt all main”