please help me in this

C:\Users\Mitesh\Documents\Arduino\libraries\PID_v1\PID_v1.cpp: In constructor ‘PID::PID(double*, double*, double*, double, double, double, int)’:
C:\Users\Mitesh\Documents\Arduino\libraries\PID_v1\PID_v1.cpp:26: error: ‘millis’ was not declared in this scope
C:\Users\Mitesh\Documents\Arduino\libraries\PID_v1\PID_v1.cpp: In member function ‘void PID::Compute()’:
C:\Users\Mitesh\Documents\Arduino\libraries\PID_v1\PID_v1.cpp:43: error: ‘millis’ was not declared in this scope

how to solve this problem

First rule with code errors is to supply the code that gives the error!

This message suggests that millis is a variable. Have you got millis()?

Weedpharma

Are you sure you installed V1.0.1 from Github: v1.0.1

Looks like you have an older version that may not be compatible with Arduino IDE V1.x.x.