PlatformIO: compiling for ESP32 and SimpleFOC 2.2.1

In case anyone is having trouble compiling their code for ESP32 using the new SimpleFOC library release v2.2.1 under PlatformIO, for me the following option helped in platformio.ini:

; platform = espressif32
platform =

I assume this is a temporary situation and they will eventually make the newer version of ESP32 core the default, or maybe its a problem specific to some setups. In any case, this solved it for me.