Astra Pro installation in ubuntu 20.04 -- make error

Hello everybody,

I followed the installation instruction from the following page but I got a make error. Any idea how to resolve it?
https://astra-wiki.readthedocs.io/en/latest/installation.html

Error:

Hello,
I have the same make error when trying the SimpleViewer sample. Any idea please on how to solve this issue?

Astra Pro is supported by OpenNI SDK.
You can download the latest OpenNI SDK at https://www.orbbec.com/