While updating the Miab server from v0.25 to v0.26b I received the error:
`Package python-virtualenv is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package ‘python-virtualenv’ has no installation candidate`
Mails are sending and receiving just fine. It only seems to make the admin panel unreachable.
What is in your /etc/apt/sources.list file?
This:
# deb http://mirror.leaseweb.net/ubuntu trusty main restricted
# deb http://mirror.leaseweb.net/ubuntu trusty-updates main restricted
# deb http://security.ubuntu.com/ubuntu trusty-security main restricted
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
# deb http://mirror.leaseweb.net/ubuntu trusty main restricted
# deb-src http://mirror.leaseweb.net/ubuntu trusty main restricted
## Major bug fix updates produced after the final release of the
## distribution.
# deb http://mirror.leaseweb.net/ubuntu trusty-updates main restricted
# deb-src http://mirror.leaseweb.net/ubuntu trusty-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 http://mirror.leaseweb.net/ubuntu trusty universe
# deb-src http://mirror.leaseweb.net/ubuntu trusty universe
# deb http://mirror.leaseweb.net/ubuntu trusty-updates universe
# deb-src http://mirror.leaseweb.net/ubuntu trusty-updates universe
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
# deb http://mirror.leaseweb.net/ubuntu trusty multiverse
# deb-src http://mirror.leaseweb.net/ubuntu trusty multiverse
# deb http://mirror.leaseweb.net/ubuntu trusty-updates multiverse
# deb-src http://mirror.leaseweb.net/ubuntu trusty-updates multiverse
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
# deb http://mirror.leaseweb.net/ubuntu trusty-backports main restricted universe multiverse
# deb-src http://mirror.leaseweb.net/ubuntu trusty-backports main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu trusty-security main restricted
deb-src http://security.ubuntu.com/ubuntu trusty-security main restricted
deb http://security.ubuntu.com/ubuntu trusty-security universe
deb-src http://security.ubuntu.com/ubuntu trusty-security universe
deb http://security.ubuntu.com/ubuntu trusty-security multiverse
deb-src http://security.ubuntu.com/ubuntu trusty-security multiverse
## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
deb http://archive.canonical.com/ubuntu trusty partner
deb-src http://archive.canonical.com/ubuntu trusty partner
## Uncomment the following two lines to add software from Ubuntu's
## 'extras' repository.
## This software is not part of Ubuntu, but is offered by third-party
## developers who want to ship their latest software.
# deb http://extras.ubuntu.com/ubuntu trusty main
# deb-src http://extras.ubuntu.com/ubuntu trusty main