How to clear and recreate arduino object

Projects General Guidance
1

I'm doing the mobile rover, part of the engineering kit, I'm following the chapters provided on Ardiono website for this kit. I recieve this message

>> a = arduino('COM5', 'MKR1000', 'Libraries', 'MotorCarrier');
carrier = addon(a,'MotorCarrier');
No add-on library uploaded to the board. Clear and recreate the current arduino object to include the appropriate library.
For a list of available libraries, type 'listArduinoLibraries'.

I'm not sure how to clear and recreate the object.
Thanks.

2 
>> a = arduino('COM5', 'MKR1000', 'Libraries', 'MotorCarrier');
carrier = addon(a,'MotorCarrier');
No add-on library uploaded to the board. Clear and recreate the current arduino object to include the appropriate library.
For a list of available libraries, type 'listArduinoLibraries'.

addon is a function that is missing. Either You need to write the code for it, or include a library containiing addon.

Always post the entire code so we don't need to spend time on guessing.

3

Not sure what you mean, that is the whole code, unless you mean this :

>> listArduinoLibraries

ans =

  12×1 cell array

    {'Adafruit/BNO055'       }
    {'Adafruit/MotorShieldV2'}
    {'CAN'                   }
    {'I2C'                   }
    {'MKRMotorCarrier'       }
    {'MotorCarrier'          }
    {'RotaryEncoder'         }
    {'SPI'                   }
    {'Serial'                }
    {'Servo'                 }
    {'ShiftRegister'         }
    {'Ultrasonic'            }

I'm brand new at this so I don't understand the reason for any of the error messages.

4

The first posting is an error mesaage.
What is the second post showing? Nothing I understand nor recognize.

5

That is the list of available libraries.

6

I did not ask for that. I asked for the Your code.