The namespace '<global namespace>' already contains a definition for stackoverflow code example

Example: The namespace '' already contains a definition for stackoverflow

public float speed = 10f; private Transform target; private int wavepointIndex = 0; void start() {     target = Waypoints.points[0]; } void update() {     Vector3 dir = target.position - transform.position;     transform.Translate(dir.normalized * speed * Time.deltaTime, Space.World);     if (Vector3.Distance(transform.position, target.position) <= 0.2f)     {         GetNextWaypoint();     } } void GetNextWaypoint() {     if (wavepointIndex >= Waypoints.points.Length - 1)     {         Destroy(gameObject);     }     wavepointIndex++;     target = Waypoints.points[wavepointIndex]; }