Standard DHT11 library

I’m using a DHT11 sensor, and I seem to have lots of problems with it. It keeps giving the error message

Arduino: 1.8.7 (Mac OS X), Board: "Arduino/Genuino Uno"

In file included from /Users/om/Documents/Arduino/libraries/DHT_sensor_library-1.3.0/DHT_U.cpp:22:0:
/Users/om/Documents/Arduino/libraries/DHT_sensor_library-1.3.0/DHT_U.h:25:29: fatal error: Adafruit_Sensor.h: No such file or directory
 #include <Adafruit_Sensor.h>

                             ^
compilation terminated.
exit status 1
Error compiling for board Arduino/Genuino Uno.

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

If you can help, here is the code:

//DHT11 Sensor:
#include "DHT.h"
#define DHTPIN 5 // which digital pin we're connected to
#define DHTTYPE DHT11

DHT dht(DHTPIN, DHTTYPE);




void setup() {
  Serial.begin(9600);
  delay(300);
  Serial.println("Humidity Sensor Test");
  dht.begin();
  delay(300);
}

void loop() {
  // Reading temperature or humidity takes about 250 milliseconds!
  // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
  int h = dht.readHumidity();
  int t = dht.readTemperature();


  Serial.print("Temp: ");
  Serial.print(t);
  Serial.print("C, Humidity: ");
  Serial.print(h);
  Serial.println("%");
  delay(2500);
}

It's telling you that the DHT library requires another library from Adafruit. Read about it here

Hi...thanks for the help