Hardware:
Board: Wemos Lolin32
IDE name: Arduino IDE
Computer OS: Ubuntu
Description:
I don't have a problem - code works fine. I'm using the ESPmDNS library. The comments on line 19 of ESPmDNS.h reference a method 'update' (which I remember was present in the 8266 version of the library). There is no update() method in the ESPmDNS library so the comment which is there to help users 'use' the library is misleading.