My project is based on a moving fan using dht11 sensors.I have used 2 void loops and the IDE is showing an error "exit status 1 redefinition of 'void loop()'"

One doubt:Can we use 2 void loops in the code.Please see and identify the errors.

#include <DHT.h>
#include <DHT_U.h>
#include <Adafruit_Sensor.h>


 // Including library for dht
#include<LiquidCrystal.h>
LiquidCrystal lcd(2, 3, 4, 5, 6, 7);
#define dht_dpin 12
int DHT;
#define pwm 9


void setup() {
  // put your setup code here, to run once:
 
 
    
    

}

void loop() {
  // put your main code here, to run repeatedly:
   // put your setup code here, to run once:
 lcd.begin(16, 2);
 
 lcd.clear();
 lcd.print(" Fan Speed");
 lcd.setCursor(0,1);
 lcd.print(" Controlling");
 delay(2000);
 analogWrite(pwm, 255);
 lcd.clear();
 lcd.print("Circuit Digest ");
 delay(2000);}

  void loop(){
  DHT.read11(dht_dpin);
  int temp=DHT.temperature;
  lcd.setCursor(0,0);
  lcd.print("Temperature:");
  lcd.print(temp);   // Printing temperature on LCD
  
  lcd.print("oC");
  lcd.setCursor(0,1);
  if(temp <26 )
    { 
      analogWrite(9,0);
      lcd.print("Fan OFF");
      delay(100);
    }
    
    else if(temp==26)
    {
      analogWrite(pwm, 51);
      lcd.print("Fan Speed: 20%");
      delay(100);
    }
    
     else if(temp==27)
    {
      analogWrite(pwm, 102);
      lcd.print("Fan Speed: 40%");
      delay(100);
    }
    
     else if(temp==28)
    {
      analogWrite(pwm, 153);
      lcd.print("Fan Speed: 60%");
      delay(100);
    }
    
    else if(temp==29)
    {
      analogWrite(pwm, 204);
      lcd.print("Fan Speed: 80%");
      delay(100);
    }
     else if(temp>29)
    {
      analogWrite(pwm, 255);
      lcd.print("Fan Speed: 100%");
      delay(100);
    }
  delay(3000);

}


}