It remains to indicate the installation of a library in a manual

Hello.
I would like to comment that the project “Unit 4 – ESP32 BLE Server and Client (Part 2/2)” on page 292 of the manual “Learn_ESP32_with_Arduino_IDE_2nd_Edition_Rui_Santos_Sara_Santos.pdf” does not work, since it is necessary to indicate the download and installation of the “Adafruit_BusIO” library (https://github.com/adafruit/Adafruit_BusIO).
On page 293 it explains the installation of two other libraries, but the one mentioned above remains to be indicated.
Now my project works correctly after installing this library.

Thanks for such a good course.

See the project running