Vehicle Class Not Instantiated

[umerhuzaifa]

Trying to create a car model using Vehicle class but MATLAB complains with the following error:

Abstract classes cannot be instantiated. Class 'Vehicle' defines abstract methods and/or properties.

On opening where Vehicle.m is located, it correctly identifies this as one of the PeterCorke toolbox files but still is not running.

Any help?

Update:

Running MATLAB R2021b Update 1