Facing AI Seek Behavior issue in Unity

Question

I am currently self-learning steering behaviors and am following this lecture I had found which gives a really good introduction about AI implementation aka https://edirlei.com/aulas/game-ai-2020/GAME_AI_Lecture_07_Steering_Behaviours_2020.html.

I've faced an issue when trying to implement the 'Seek' behavior in a 2D game environment in which the 'seek' game object does not try to move towards its target. There are no errors showing in the console but my best guess is that it's because of the use of Rigidbody in the 'SteeringBehaviorBase' class code. I've tried converting it to Rigidbody2D instead but sadly it still does not move.

For further context, I've attached the 'SteeringBehaviorBase' and 'SeekBehavior' classes onto my 'seek' game object and a circle collider on my 'seek target' game object. I've also set the reference of the seek target property in the 'SeekBehavior' code to the 'seek target' game object.

I would really appreciate anyone's help in guiding me to solve this problem.