#include <TimeLib.h>
What was the original instructable?
At your advice I added "#include <TimeLib.h>" as the first line in the include statements so my list now looks like this;
#include <TimeLib.h>
#include <NTPClient.h>
#include <Servo.h>
#include <ESP8266WiFi.h>
#include <ESP8266WiFiMulti.h>
#include <WiFiUdp.h>
I then ensure that the Time library was installed.
I compiled the sketch only to get the same result.
I suspect I have something wrong in my Arduino IDE, I closed Arduino and rebooted my Mac Mini, reopened Arduino IDE and got the same result.
I am really confused as this is the first intractable that has given me this much trouble. I have posted a question in the instructable comments section but it has been a while since there was any activity.