Error compiling for board NodeMCU 1.0 (ESP-12E Module

Need Help With My Project
,
23

Can you please tell me what I am doing wrong here?
I believe I have checked that all the libraries are installed correctly and seemingly cannot find anything wrong.
Arduino IDE

#define BLYNK_PRINT Serial    // Comment this out to disable prints and save space
#include <SPI.h>
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <SimpleTimer.h>
#include <DHT.h>

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "_omyDSXtrWE_7UTL3gZsurAkCaklB2zf"; //Enter the Auth code which was send by Blink

#define BLYNK_TEMPLATE_ID "TMPLwRpGCxLt"
#define BLYNK_DEVICE_NAME "NodeMCU"


// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "Rob's Networks";  //Enter your WIFI Name
char pass[] = "4121@Flag";  //Enter your WIFI Password

#define DHTPIN 2          // Digital pin 4

// Uncomment whatever type you're using!
#define DHTTYPE DHT11     // DHT 11
//#define DHTTYPE DHT22   // DHT 22, AM2302, AM2321
//#define DHTTYPE DHT21   // DHT 21, AM2301

DHT dht(DHTPIN, DHTTYPE);
SimpleTimer timer;

// This function sends Arduino's up time every second to Virtual Pin (5).
// 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 sendSensor()
{
  float h = dht.readHumidity();
  float t = dht.readTemperature(); // or dht.readTemperature(true) for Fahrenheit

  if (isnan(h) || isnan(t)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }
  // You can send any value at any time.
  // Please don't send more that 10 values per second.
  Blynk.virtualWrite(V5, h);  //V5 is for Humidity
  Blynk.virtualWrite(V6, t);  //V6 is for Temperature
}

void setup()
{
  Serial.begin(9600); // See the connection status in Serial Monitor
  Blynk.begin(auth, ssid, pass);

  dht.begin();

  // Setup a function to be called every second
  timer.setInterval(1000L, sendSensor);
}

void loop()
{
  Blynk.run(); // Initiates Blynk
  timer.run(); // Initiates SimpleTimer
}

Error:
Arduino: 1.8.19 (Windows 10), Board: “NodeMCU 1.0 (ESP-12E Module), 80 MHz, Flash, Disabled (new aborts on oom), Disabled, All SSL ciphers (most compatible), 32KB cache + 32KB IRAM (balanced), Use pgm_read macros for IRAM/PROGMEM, 4MB (FS:2MB OTA:~1019KB), 2, v2 Lower Memory, Disabled, None, Only Sketch, 115200”

In file included from C:\Data\Dropbox\Arduino\libraries\Blynk-1.1.0\src/Blynk/BlynkApi.h:37,
from C:\Data\Dropbox\Arduino\libraries\Blynk-1.1.0\src/BlynkApiArduino.h:14,
from C:\Data\Dropbox\Arduino\libraries\Blynk-1.1.0\src/BlynkSimpleEsp8266.h:24,
from C:\Users\ABCD\AppData\Local\Temp\arduino_modified_sketch_30096\temperature-monitor-in-mobile.ino:6:

C:\Data\Dropbox\Arduino\libraries\Blynk-1.1.0\src/Blynk/BlynkTimer.h:36:21: error: redefinition of ‘class BlynkTimer’
36 | #define SimpleTimer BlynkTimer
| ^~~~~~~~~~
C:\Data\Dropbox\Arduino\libraries\SimpleTimer-1.0.0/SimpleTimer.h:10:7: note: in expansion of macro ‘SimpleTimer’
10 | class SimpleTimer {
| ^~~~~~~~~~~
C:\Data\Dropbox\Arduino\libraries\Blynk-1.1.0\src/Blynk/BlynkTimer.h:36:21: note: previous definition of ‘class BlynkTimer’
36 | #define SimpleTimer BlynkTimer
| ^~~~~~~~~~
C:\Data\Dropbox\Arduino\libraries\Blynk-1.1.0\src/Blynk/BlynkTimer.h:43:7: note: in expansion of macro ‘SimpleTimer’
43 | class SimpleTimer {
| ^~~~~~~~~~~
exit status 1

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

24

Remove this line

replace SimpleTimer with BlynkTimer

25

Should be on the top of your sketch, above anything.

26

Thanks very much John,
This just sorted out a couple of further questions as well.
Brilliant!

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