CESIUMDIR environment variable not recognized

[akhilub]

Bug Description
CESIUMDIR environment variable is not recognized in jupyter notebook even after describing its path

To Reproduce
Describe the path of CESIUMDIR in pico ~/.profile.
For e.g export CESIUMDIR="/Users/akhilsinghchauhan/Downloads/IE\ 670\ Dr.chase/Cesium-1.7$

Even after describing the full path of the CESIUMDIR environment variable, it is not recognized

Python Version:

• [] Python 3

VeRoViz Version:

It's a good idea to verify that you're working with the latest version of VeRoViz:

'Your current installed version of veroviz is 0.4.3. You are up-to-date with the latest available version.'

Operating System :

• Mac
• Windows
• Linux
• other

Browser [chrome, safari]