Servo motor with ultrasonic sensor

I am working on a project for my school. The project is a pet feeder which has servo motor and ultrasonic sensor in it. When the pet walks near the ultrasonic sensor, the servo will rotate and drop food for for 5 seconds and close again. Unfortunately I am getting error in my code as I cant slot in the delay in the code. This is what my code loom like.

#include <Servo.h>

// constants won’t change
const int TRIG_PIN = 6;
const int ECHO_PIN = 7;
const int SERVO_PIN = 9;
const int DISTANCE_THRESHOLD = 50;

Servo servo;
float duration_us, distance_cm;

void setup() {

Serial.begin (9600);
pinMode(TRIG_PIN, OUTPUT);
pinMode(ECHO_PIN, INPUT);
servo.attach(SERVO_PIN);
servo.write(0);
}

void loop() {

digitalWrite(TRIG_PIN, HIGH);
delayMicroseconds(10);
digitalWrite(TRIG_PIN, LOW);
duration_us = pulseIn(ECHO_PIN, HIGH);
distance_cm = 0.017 * duration_us;

if(distance_cm < DISTANCE_THRESHOLD)
servo.write(90);
delay(1000);
servo.write(0);

}

And this is the error warning:

void loop() {

^~~~

exit status 1
redefinition of ‘void setup()’

Any help would be appreciated.

It compiles fine for me - did you paste the code into the IDE twice?

Somehow it works now. glad it works . Thanks for the reply anyway.