[solved] Serial.readStringUntil does not work correctly in my code

[palhares]

thanks, i tried to read the serial only once, but when i do that i realized that only the first if of the green works, even though i insert in the serial YELLOW for example

#include <SD.h>
#include <SPI.h>
#include <Wire.h>
//============================================================================================
String timeLeds_Serial;

//============================================================================================
int led_green_trafficLight;
int led_yellow_trafficLight;
int led_red_trafficLight;
//============================================================================================
void setup () {

  Serial.begin(9600);
  delay(1000);
}
//============================================================================================

void funcGREEN() /// GREEN

{
  timeLeds_Serial.remove(0, 5);
  led_green_trafficLight = timeLeds_Serial.toInt();
}

void funcYELLOW() /// YELLOW

{
  timeLeds_Serial.remove(0, 6);
  led_yellow_trafficLight = timeLeds_Serial.toInt();
}

void funcRED() /// RED

{
  timeLeds_Serial.remove(0, 3);
  led_red_trafficLight = timeLeds_Serial.toInt();
}

//============================================================================================
void trafficLight() {

  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);

  digitalWrite(2, HIGH);
  digitalWrite(3, LOW);
  digitalWrite(4, LOW);

  delay(led_green_trafficLight);      // GREEN LED

  digitalWrite(2, LOW);
  digitalWrite(3, HIGH);
  delay(led_yellow_trafficLight);       // YELLOW LED

  digitalWrite(3, LOW);
  digitalWrite(4, HIGH);
  delay(led_red_trafficLight);       // RED LED

}
//============================================================================================

void loop () {

  trafficLight();

  if (Serial.available() > 0)
  {
    timeLeds_Serial = Serial.readStringUntil('\n');


    if (timeLeds_Serial.startsWith("GREEN"))
    {
      funcGREEN();
    }

    if (timeLeds_Serial.startsWith("YELLOW"))
    {
      funcYELLOW();
    }

    if (timeLeds_Serial.startsWith("RED"))
    {
      funcRED();
    }
  }

  //============================================================================================

  delay(1000);
  Serial.println("Green = " + led_green_trafficLight);
  delay(1000);
  Serial.println("Yellow = " + led_yellow_trafficLight);
  delay(1000);
  Serial.println("Red = " + led_red_trafficLight);
  delay(1000);
}

and sometimes a strange error happens, I'll send a print, in this case I put it in the serial YELLOW20000