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Error while compiling nodemcu 8266 program

#include <BlynkSimpleEsp8266.h>
#include <SoftwareSerial.h>
#include <SimpleTimer.h>
 
char auth[] = "ac173b0527c94a91a6cde0dcdfe6bdef";
 
// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "ZONG MBB-E8231-6E63";
char pass[] = "08659650";
 
SimpleTimer timer;
 
String myString; // complete message from arduino, which consistors of snesors data
char rdata; // received charactors
 
int firstVal, secondVal,thirdVal; // sensors 
int led1,led2,led3,led4,led5,led6;
// This function sends Arduino's up time every second to Virtual Pin (1).
// In the app, Widget's reading frequency should be set to PUSH. This means
// that you define how often to send data to Blynk App.
void myTimerEvent()
{
  // You can send any value at any time.
  // Please don't send more that 10 values per second.
  Blynk.virtualWrite(V1, millis() / 1000);
  
}
 
 
 
void setup()
{
  // Debug console
  Serial.begin(9600);
 
  Blynk.begin(auth, ssid, pass);
 
    timer.setInterval(1000L,sensorvalue1); 
    timer.setInterval(1000L,sensorvalue2); 
    timer.setInterval(1000L,sensorvalue3);
    timer.setInterval(1000L,sensorvalue4);
    timer.setInterval(1000L,sensorvalue5);
    timer.setInterval(1000L,sensorvalue6);
  
 
}
 
void loop()
{
   if (Serial.available() == 0 ) 
   {
  Blynk.run();
  timer.run(); // Initiates BlynkTimer
   }
   
  if (Serial.available() > 0 ) 
  {
    rdata = Serial.read(); 
    myString = myString+ rdata; 
   // Serial.print(rdata);
    if( rdata == '\n')
    {
     Serial.println(myString); 
  // Serial.println("fahad");
// new code
String l = getValue(myString, ',', 0);
String m = getValue(myString, ',', 1);
String n = getValue(myString, ',', 2);
String o = getValue(myString, ',', 3);
String p = getValue(myString, ',', 4);
String q = getValue(myString, ',', 5);
 
 
// these leds represents the leds used in Blynk application
led1 = l.toInt();
led2 = m.toInt();
led3 = n.toInt();
led4 = o.toInt();
led5 = p.toInt();
led6 = q.toInt();
 
  myString = "";
// end new code
    }
  }
 
}
 
void sensorvalue1()
{
int sdata = led1;
  // You can send any value at any time.
  // Please don't send more that 10 values per second.
  Blynk.virtualWrite(V10, sdata);
 
}
void sensorvalue2()
{
int sdata = led2;
  // You can send any value at any time.
  // Please don't send more that 10 values per second.
  Blynk.virtualWrite(V11, sdata);
 
}
 
void sensorvalue3()
{
int sdata = led3;
  // You can send any value at any time.
  // Please don't send more that 10 values per second.
  Blynk.virtualWrite(V12, sdata);
 
}
 
void sensorvalue4()
{
int sdata = led4;
  // You can send any value at any time.
  // Please don't send more that 10 values per second.
  Blynk.virtualWrite(V13, sdata);
 
}
 
void sensorvalue5()
{
int sdata = led5;
  // You can send any value at any time.
  // Please don't send more that 10 values per second.
  Blynk.virtualWrite(V14, sdata);
 
}
 
void sensorvalue6()
{
int sdata = led6;
  // You can send any value at any time.
  // Please don't send more that 10 values per second.
  Blynk.virtualWrite(V15, sdata);
 
}
 
 
 
 
 
 
String getValue(String data, char separator, int index)
{
    int found = 0;
    int strIndex[] = { 0, -1 };
    int maxIndex = data.length() - 1;
 
    for (int i = 0; i <= maxIndex && found <= index; i++) {
        if (data.charAt(i) == separator || i == maxIndex) {
            found++;
            strIndex[0] = strIndex[1] + 1;
            strIndex[1] = (i == maxIndex) ? i+1 : i;
        }
    }
    return found > index ? data.substring(strIndex[0], strIndex[1]) : "";
}

below is the error while compiling the program
Arduino: 1.8.12 (Windows 10), Board: “NodeMCU 1.0 (ESP-12E Module), 80 MHz, Flash, Legacy (new can return nullptr), All SSL ciphers (most compatible), 4MB (FS:2MB OTA:~1019KB), 2, v2 Lower Memory, Disabled, None, Only Sketch, 115200”

In file included from C:\Program Files (x86)\Arduino\libraries\Blynk\src/Blynk/BlynkApi.h:17:0,

             from C:\Program Files (x86)\Arduino\libraries\Blynk\src/BlynkApiArduino.h:14,

             from C:\Program Files (x86)\Arduino\libraries\Blynk\src/BlynkSimpleEsp8266.h:24,

             from C:\Users\HP\Documents\Arduino\sketch_apr11a\sketch_apr11a.ino:2:

C:\Program Files (x86)\Arduino\libraries\Blynk\src/Blynk/BlynkTimer.h:36:21: error: redefinition of ‘class BlynkTimer’

#define SimpleTimer BlynkTimer

                 ^

C:\Users\HP\Documents\Arduino\libraries\SimpleTimer/SimpleTimer.h:10:7: note: in expansion of macro ‘SimpleTimer’

class SimpleTimer {

   ^

C:\Program Files (x86)\Arduino\libraries\Blynk\src/Blynk/BlynkTimer.h:36:21: error: previous definition of ‘class BlynkTimer’

#define SimpleTimer BlynkTimer

                 ^

C:\Program Files (x86)\Arduino\libraries\Blynk\src/Blynk/BlynkTimer.h:41:7: note: in expansion of macro ‘SimpleTimer’

class SimpleTimer {

   ^

exit status 1
Error compiling for board NodeMCU 1.0 (ESP-12E Module).

This report would have more information with
“Show verbose output during compilation”
option enabled in File -> Preferences.

The Blynk library includes BlynkTimer, which is an 8mproved version of SimpleTimer.
Try removing the #include <SimpleTimer.h> and replacing

with:
BlynkTimer timer;

Pete.

sir i had done as u said after removing the #include<simpletimer.h> and replacing the SimpleTimer timer ; with BlynkTimer timer; Im getting the following error plz help me out sir

‘’'Arduino: 1.8.12 (Windows 10), Board: “NodeMCU 1.0 (ESP-12E Module), 80 MHz, Flash, Legacy (new can return nullptr), All SSL ciphers (most compatible), 4MB (FS:2MB OTA:~1019KB), 2, v2 Lower Memory, Disabled, None, Only Sketch, 115200”

sketch_apr11a:13:12: error: redefinition of ‘BlynkTimer timer’

BlynkTimer timer;

        ^

sketch_apr11a:4:12: error: ‘BlynkTimer timer’ previously declared here

BlynkTimer timer;

        ^

exit status 1
redefinition of ‘BlynkTimer timer’

This report would have more information with
“Show verbose output during compilation”
option enabled in File -> Preferences.
‘’’

thank you peteknight for helping me out.