Nokia 5110 error message

As a complete novice and an Old Age Pensioner I am playing about with a Nokia 5110 display. Using a ‘Brainy Bits’ guide I entered the code shown below. Keep getting an error message. What I think is the relevant part of the message is shown below. (The full message is very long).

“In file included from /Users/brianmatthews/Documents/Arduino/libraries/DHT_sensor_library-1.3.0/DHT_U.cpp:22:0:
/Users/brianmatthews/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>”

(I don’t know why it mentions Adafruit, there is no mention of it in the code.)

^
compilation terminated.
Using library U8glib in folder: /Users/brianmatthews/Documents/Arduino/libraries/U8glib (legacy)
Using library DHT_sensor_library-1.3.0 at version 1.3.0 in folder: /Users/brianmatthews/Documents/Arduino/libraries/DHT_sensor_library-1.3.0
exit status 1
Error compiling for board Arduino/Genuino Mega or Mega 2560.

#include <U8glib.h>
#include <DHT.h>

#define dht_apin A1
#define backlight_pin 11

dht DHT;

U8GLIB_PCD8544 u8g(8, 4, 7, 5, 6);  // CLK=8, DIN=4, CE=7, DC=5, RST=6

const uint8_t brainy_bitmap[] PROGMEM = {
 0x00, 0x00, 0x03, 0xB0, 0x00, 0x00, 0x00, 0x00, 0x07, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x46,
0x00, 0x00, 0x00, 0x00, 0xFC, 0x47, 0xC0, 0x00, 0x00, 0x01, 0xCE, 0x4C, 0x60, 0x00, 0x00, 0x03,
0x02, 0x58, 0x30, 0x00, 0x00, 0x03, 0x02, 0x58, 0x10, 0x00, 0x00, 0x02, 0x02, 0x58, 0x18, 0x00,
0x00, 0x03, 0x06, 0x4C, 0x18, 0x00, 0x00, 0x07, 0x04, 0x44, 0x18, 0x00, 0x00, 0x0D, 0x80, 0x40,
0x3C, 0x00, 0x00, 0x09, 0xC0, 0x40, 0xE6, 0x00, 0x00, 0x18, 0x78, 0x47, 0xC2, 0x00, 0x00, 0x18,
0x0C, 0x4E, 0x02, 0x00, 0x00, 0x1F, 0x86, 0x4C, 0x7E, 0x00, 0x00, 0x0E, 0xC6, 0xE8, 0xEE, 0x00,
0x00, 0x18, 0x43, 0xF8, 0x82, 0x00, 0x00, 0x10, 0x06, 0x4C, 0x03, 0x00, 0x00, 0x30, 0x0C, 0x46,
0x01, 0x00, 0x00, 0x30, 0x18, 0x46, 0x01, 0x00, 0x00, 0x10, 0x18, 0x43, 0x03, 0x00, 0x00, 0x18,
0x10, 0x43, 0x03, 0x00, 0x00, 0x1C, 0x70, 0x41, 0x86, 0x00, 0x00, 0x0F, 0xE0, 0x40, 0xFE, 0x00,
0x00, 0x09, 0x1E, 0x4F, 0x06, 0x00, 0x00, 0x08, 0x30, 0x43, 0x86, 0x00, 0x00, 0x0C, 0x20, 0x41,
0x86, 0x00, 0x00, 0x06, 0x60, 0x40, 0x8C, 0x00, 0x00, 0x07, 0x60, 0x40, 0xB8, 0x00, 0x00, 0x01,
0xE0, 0x41, 0xF0, 0x00, 0x00, 0x00, 0x38, 0xE3, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xBE, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xCF, 0x82, 0x0C, 0x86, 0x46, 0x1F, 0xEF, 0xC3, 0x0C,
0xC6, 0xEE, 0x1C, 0xEC, 0xC7, 0x0C, 0xE6, 0x7C, 0x1C, 0xED, 0x8D, 0x8C, 0xFE, 0x38, 0x1C, 0xED,
0x8D, 0xCC, 0xDE, 0x38, 0x1D, 0xCD, 0xDF, 0xCC, 0xCE, 0x38, 0x1F, 0x8C, 0xF8, 0xEC, 0xC6, 0x38,
0x1F, 0xEC, 0x08, 0x0C, 0xC2, 0x18, 0x1C, 0xEC, 0x00, 0xC0, 0x00, 0x00, 0x1C, 0xFD, 0xFB, 0xC0,
0x00, 0x00, 0x1C, 0xFC, 0x63, 0x00, 0x00, 0x00, 0x1C, 0xEC, 0x63, 0xC0, 0x00, 0x00, 0x1F, 0xEC,
0x60, 0xC0, 0x00, 0x00, 0x1F, 0xCC, 0x63, 0xC0, 0x00, 0x00, 0x1F, 0x0C, 0x63, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x28, 0x2B, 0x4F, 0x67,
0x42, 0x38, 0x7B, 0xEA, 0x86, 0xB2, 0x28, 0xC7, 

};

void draw(void) {
  u8g.drawBitmapP( 37, 0, 6, 50, brainy_bitmap);  // put bitmap
  u8g.setFont(u8g_font_profont11);  // select font
  u8g.drawStr(0, 15, “T: “);  // put string of display at position X, Y
  u8g.drawStr(0, 35, “H: “);
  u8g.setPrintPos(15, 15);  // set position
  u8g.print(DHT.temperature, 0);  // display temperature from DHT11
  u8g.drawStr(30, 15, “c “);
  u8g.setPrintPos(15, 35);
  u8g.print(DHT.humidity, 0);  // display humidity from DHT11
  u8g.drawStr(30, 35, “% “);
}

void setup(void) {
  analogWrite(backlight_pin, 50);  /* Set the Backlight intensity */
}

void loop(void) {
  DHT.read11(dht_apin);  // Read apin on DHT11

  u8g.firstPage();  
  do {
    draw();
  } while( u8g.nextPage() );
  
  delay(5000);  // Delay of 5sec before accessing DHT11 (min - 2sec)
}/code]

I don’t know why it mentions Adafruit, there is no mention of it in the code.

/Users/brianmatthews/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>"

But it does get a mention, indeed it is #included by DHT_U.h

OK thanks but why am I getting errors?

Mountainash: OK thanks but why am I getting errors?

Did you install the Adafruit sensor library ?

OK thanks but why am I getting errors?

Adafruit_Sensor.h: No such file or directory