Hi @juliofontes
Please could you try changing this line:
#define ERROR_LED_PIN 13 //Led Pin: Typical Arduino Board
to this:
#define ERROR_LED_PIN LED_BUILTIN //Led Pin: Typical Arduino Board
Also on the MKR1310, you might need to swap these lines from this:
#define SERIAL SerialUSB //Sparkfun Samd21 Boards
//#define SERIAL Serial //Adafruit, other Samd21 Boards
to this:
//#define SERIAL SerialUSB //Sparkfun Samd21 Boards
#define SERIAL Serial //Adafruit, other Samd21 Boards