Dependency install issues

[JMWatkins]

`Reading package lists... Done Building dependency tree Reading state information... Done Package xvfb 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: Unable to locate package swig E: Unable to locate package swig3.0 E: Couldn't find any package by glob 'swig3.0' E: Couldn't find any package by regex 'swig3.0' E: Unable to locate package libssl-dev E: Unable to locate package libjpeg-dev E: Package 'xvfb' has no installation candidate`

I get this when I run ./install-dependencies.sh Any clue what could be causing me to miss locating those packages. I seem to be unable to apt-get them or pip them too... Thanks!

[CalfCrusher]

Same here. Any help?

[fcosec]

sudo apt-get install swig