Previosuly installed the graph on PiAware 3.7.1 SD.
Anyway, I already re-flash the uSD card to Raspbian Buster. All installations works, including the How-to Read / Set Gain from SkyView and Gmap - #104 by abcd567.
*Just change this (If using Raspbian Buster): - sudo apt install php7.3-cgi
Thanks for the reply. You are great for this graph, bigger look.
Best regards.