NodeMCU DHT11 No Internet

#include "DHT.h"        // including the library of DHT11 temperature and humidity sensor
#define DHTTYPE DHT11   // DHT 11

#define dht_dpin D7
DHT dht(dht_dpin, DHTTYPE);
void setup(void)
{
  dht.begin();
  Serial.begin(9600);
  Serial.println("Humidity and temperature \n\n");
   Serial.println("==========================================");
  delay(700);

}
void loop() {
    float h = dht.readHumidity();
    float t = dht.readTemperature();
    Serial.print("Current humidity = ");
    Serial.print(h);
    Serial.print("% temperature = ");
    Serial.print(t);
    Serial.println("degree Celsius");
  delay(800);
}