NavMeshPlus issue with agent type assignment

[K-bomb07]

I have used this code in conjunction with the third party plugin, NavMeshPlus to generate multiple Navigation Surfaces and assign an AgentTypeId to each of them for my game’s 2D pathfinding AI.

public int highestFloor;
public GameObject rootPrefab;
//A prefab that contains a navigation surface and a navigation collectSources2d component

public List<FloorColliderIdentifier> FCL = new List<FloorColliderIdentifier>();
// Start is called before the first frame update
void Start()
{
highestFloor = 0;
Invoke("assignFCL", 0.2f);
}

void assignFCL()
{
FloorColliderIdentifier[] allFCL = FindObjectsOfType<FloorColliderIdentifier>();
 
for(int i = 0; i < allFCL.Length; i++)
{
    FCL.Add(allFCL[i]);
    if(allFCL[i].representingFloor > highestFloor)
    {
        highestFloor = allFCL[i].representingFloor;
    }
}

bakeTheGrids();
}

void bakeTheGrids()
{
for(int i = 0; i < highestFloor + 1; i++)
{
    GameObject navMeshRoot = Instantiate(rootPrefab, Vector3.zero, rootPrefab.transform.rotation);
    navMeshRoot.name = "Floor " + i.ToString() + " NavMesh Root";
    navMeshRoot.GetComponent<NavMeshSurface>().hideEditorLogs = true;


    for (int k = 0; k < FCL.Count; k++)
    {
        if (FCL[k].representingFloor <= i || FCL[k].representingFloor == i + 1)
        {
            Debug.Log(FCL[k].name + " is walkable for " + navMeshRoot.name);
            FCL[k].GetComponent<NavMeshModifier>().area = 0; //WALKABLE
        }
        else
        {
            Debug.Log(FCL[k].name + " is not walkable for " + navMeshRoot.name);
            FCL[k].GetComponent<NavMeshModifier>().area = 1; //NOT WALKABLE
        }
    }
    navMeshRoot.GetComponent<NavMeshSurface>().agentTypeID = i;
    navMeshRoot.GetComponent<NavMeshSurface>().BuildNavMesh();
}

But, I am having an issue on line 50 of the code, where instead of assigning the agentTypeID, I get a message that looks like this on every NavigationSurface I create.

What does this message mean and how can I assign the variable correctly?

This is a list of all of my agent types.