Conpile error Cant find edu.wpi.first.wpilibj.controller

Technical Programming
1

I am writing a robot program, but cannot find the package and cannot build it. Why?

import edu.wpi.first.wpilibj.controller.SimpleMotorFeedforward;

2

Have you installed the 2020 software (instructions at https://docs.wpilib.org/) and created a 2020 robot program? That class is new for 2020.

3

I did not install.
I will install now!
Thank you!

4

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