Extra Packages needed:

1- geographic info

sudo apt-get install ros-melodic-geographic-info

OR

sudo apt-get install ros-melodic-geodesy

Python packages needed:

pip3 install numpy
pip3 install pyproj (requires pip version >= 19.0)
pip3 install selenium

if you have any problems installing pyproj, try updating pip to the latest version.

you can check the pip version by running

pip3 -V

Additional stuff:

running the map node requires something called geckodriver and requires the use of firefox

to install geckodriver:

1- getting the executable

from the above link, get the url of the version you need (in this case linux x64)

then:

wget <link>
tar -xvf <downloaded file>

2- create link in bin directory

sudo ln -Pf <path to geckodriver file> /usr/bin/geckodriver