Can't understand my error on passing data through serial connection

MIT App Inventor Help
1

I am working with a tablet samsung tab A7 and an ESP 32. I am trying to switch serial screen if humidity of the room reach a certain level. I see that work because it is printed on the screen but do not switch screen and i do not why. It worked before i add a RFID check on a previous virtual screen but i do not work so i move the part about the humidity on an another and it doesnot work. Can someone explain me what is wrong?

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blocks(1)1154×919 105 KB

#include <BME280I2C.h>
#include <Wire.h>
#include <ESP32Servo.h>
#include <RFID.h>
#include <SPI.h>
//#include <FastLED.h>
#define PIN_SG90 15 // Broche de sortie utilisée
#define SERIAL_BAUD      115200
#define LED_PIN 2
//#define NUM_LEDS 20
//#define DATA_PIN 15
//CRGB leds[NUM_LEDS];
#define SERIAL_BAUD      115200
#define PIN_RFID_RST     32
#define PIN_RFID_NSS     4
Servo sg90;

RFID rfid(PIN_RFID_NSS, PIN_RFID_RST);
unsigned char status;
unsigned char str[MAX_LEN];
int ValCarte;

int IDCarte[5] = {67,215,235,12,115};
int IDBadge[5] = {89,134,170,153,236};

BME280I2C bme;

void setup() {
  
  prepare_serial();
  prepare_RFID();
  prepare_I2C();
  prepare_BME();
  //FastLED.addLeds<NEOPIXEL, DATA_PIN>(leds,NUM_LEDS);
  sg90.setPeriodHertz(50); // Fréquence PWM pour le SG90
  sg90.attach(PIN_SG90, 500, 2400);
}

void loop() {
  String message;

  print_donnees_BME280(&Serial);
  delay(10);
  if(message.equals("Tartuffe") || message.equals("1898")){
  servo();
  }
  //Bande_Led();
  delay(10);
  LectureCarte();

}

/*void Bande_Led (){
  for (int i = 0; i<= 19; i++){
    leds[i]=CRGB::Red;
    FastLED.show();
    delay(500);
  }
}*/

void prepare_RFID(){
  SPI.begin();
  rfid.init(); 

}


void servo() {
  for (int pos = 0; pos <= 180; pos += 1) {
    sg90.write(pos);
    delay(10);
  }
 // Rotation de 180° à 0°
  for (int pos = 180; pos >= 0; pos -= 1) {
    sg90.write(pos);
    delay(10);
  }
}

void prepare_I2C(){
  Wire.begin(); //GPIO 22 et 21 par défaut
}

void prepare_serial(){
  Serial.begin(SERIAL_BAUD);

  while(!Serial) {} // Wait
}
void prepare_BME(){

  while(!bme.begin())
  {
    Serial.println("Could not find BME280 sensor!");
    delay(1000);
  }

  switch(bme.chipModel())
  {
     case BME280::ChipModel_BME280:
       Serial.println("Found BME280 sensor! Success.");
       break;
     case BME280::ChipModel_BMP280:
       Serial.println("Found BMP280 sensor! No Humidity available.");
       break;
     default:
       Serial.println("Found UNKNOWN sensor! Error!");
  }
}

//Fonction prise dans le tutoriel
void print_donnees_BME280(Stream* client)
{
   float temp(NAN), hum(NAN), pres(NAN);

   BME280::TempUnit tempUnit(BME280::TempUnit_Celsius);
   BME280::PresUnit presUnit(BME280::PresUnit_Pa);

   bme.read(pres, temp, hum, tempUnit, presUnit);

   //client->print(hum);
   //client->print("% RH");

   if (hum >= 60)
  {
    Serial.println("Ca marche BME \n");
  }
}
void LectureCarte() {
  String message;
  if (rfid.findCard(PICC_REQIDL, str) == MI_OK) {
    if (rfid.anticoll(str) == MI_OK) {
    }
    rfid.selectTag(str);

    if (str[0] == IDCarte[0] && str[1] == IDCarte[1] && str[2] == IDCarte[2] && str[3] == IDCarte[3] && str[4] == IDCarte[4]){
      Serial.println("Bonne carte");
    }
    if(str[0] == IDBadge[0]&& str[1] == IDBadge[1] && str[2] == IDBadge[2] && str[3] == IDBadge[3] && str[4] == IDBadge[4]){
      Serial.println("Bon badge");
    }
    rfid.halt();
  }
  }