Looks like you have an RFID library and an RFID.cpp file in your sketch folder. If you want to use the local version, change #include <RFID.h> to #include "RFID.h"
Looks like you have an RFID library and an RFID.cpp file in your sketch folder. If you want to use the local version, change #include <RFID.h> to #include "RFID.h"