Just look at the code there. The author goes MIA and bugs are not fixed. There's really no reason to use it at this point - as there are better alternative and modern setups.

https://github.com/wiedehopf/adsb-wiki https://github.com/wiedehopf/adsb-scripts

https://github.com/mikenye/docker-adsbexchange https://github.com/mikenye