2021-01-22, 11:30
Correct. Matrix (v19) is based on Python 3, whereas Leia (v18) and before were based on Python 2.
Python 2 is now depreciated and no longer supported by its source providers, and is being phased out in favour of the newer version. The two are not directly compatible with one another (code for one generally won't work in the other without some modification), hence add-ons written in Python 2 will need to be updated and converted to Python 3 to work under Matrix and beyond.
And as the original author of this addon threw a tantrum and walked away, unless someone else forks it and takes over then it will never work with Matrix.
Python 2 is now depreciated and no longer supported by its source providers, and is being phased out in favour of the newer version. The two are not directly compatible with one another (code for one generally won't work in the other without some modification), hence add-ons written in Python 2 will need to be updated and converted to Python 3 to work under Matrix and beyond.
And as the original author of this addon threw a tantrum and walked away, unless someone else forks it and takes over then it will never work with Matrix.