Specifically LiquidCrystal_I2C.h - I've deleted conflicting libraries in the program's "C:\Program Files (x86)\Arduino\libraries" library folder but the problem remains. Strangely I can solve missing ...

I'm trying to build a relatively simple blink Arduino sketch on a Raspberry Pi 4 running Raspbian GNU/Linux 10 (buster) with PlatformIO, version 4.0.3. The platformio.ini file for that environment ...