From the other thread…
Yet, up above here, you have posted the dependency graph showing that it has appeared to work but failing on a completely different error:
The obvious question, why have you installed the Adafruit stuff in lib? The error shows it compiling from lib.
How did the library source code get into lib please. Tell me exactly the steps you took to install that library into this project.
If the word “download” appears, I may weep uncontrollably into my coffee! 
This might help, possibly, unless the compiler is too smart and doesnt bother to compile the libraries.
I suggest, start a new project. In the main cpp file, just #include the Adafruit headers you are using now, plus any others you might need for BLE stuff. All you need is to setup the Serial monitor, and in loop(), write hello to Serial and delay 5 seconds.
Set lib_deps to list the various libraries you are currently using.
Compile.
Hopefully, it will compile, but it should install the libraries first. Did it? Look in lib - I doubt you will see anything there. Because that’s not where they live. Then live under .pio and not in the project’s lib.
Humour me, and try the above test. Let me know how you get on.
Cheers,
Norm.