I deployed a ubuntu server. Then tried to install certain packages but this results in:

sudo: unable to resolve host production-server-1
E: Malformed entry 11 in list file /etc/apt/sources.list (URI parse)
E: The list of sources could not be read.

This is what sources.list looks like:

## Note, this file is written by cloud-init on first boot of an instance
## modifications made here will not survive a re-bundle.
## if you wish to make changes you can:
## a.) add 'apt_preserve_sources_list: true' to /etc/cloud/cloud.cfg
##     or do the same in user-data
## b.) add sources in /etc/apt/sources.list.d
## c.) make changes to template file /etc/cloud/templates/sources.list.tmpl

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb {{mirror}} {{codename}} main restricted
# deb-src {{mirror}} {{codename}} main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb {{mirror}} {{codename}}-updates main restricted
# deb-src {{mirror}} {{codename}}-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb {{mirror}} {{codename}} universe
# deb-src {{mirror}} {{codename}} universe
deb {{mirror}} {{codename}}-updates universe
# deb-src {{mirror}} {{codename}}-updates universe

How can I solve this problem.