Communication UART cairsens sensor with MKRWIFI 1010

Hi!

Somebody have an idea why the pins 13 and 14 don’t work? I am trying to get my sensor value on Serial Monitor. I’m using cairsens library :https://github.com/Lahorde/airbeam/tree/19caa21c031702d6a51e97caa8fd96ed97020a4c/firmware/arduino/libraries/cairsens

Here is my simple code:

#include <cairsens.h>

CairsensUART cair(&Serial1);                             

void setup() {
Serial.begin(9600);
  Serial1.begin(9600);
  while (!Serial) {
    ; 
  }
}

void loop() {

   uint8_t a = Serial1.read();
    Serial.println(cair.getNO2InstantVal(a));



}