/home/%FOLDERS%/Vplotter/polargraph_server_a1/polargraph_server_a1.ino:64:45: fatal error: utility/Adafruit_PWMServoDriver.h: No such file or directory#include "utility/Adafruit_PWMServoDriver.h"compilation terminated.exit status 1Error compiling for board Arduino/Genuino Uno.
You need to add the Adafruit PWM Servo driver library. Go into the Library Manager and search for it. Sketch --> Include Library -->Manage Libraries
Here it is in the Library Manager windowClick "Install" and it should work.