Question Spawning two units instead of one

Hello!
I am using Lambda to try to spawn units onto a grid, however, when I attempt to spawn a unit, it spawns two units instead of just one. I have four different heroes that I'm trying to spawn, but for now I just have the code written for one hero.
Here's the code that's relevant to this.

in UnitManager script:

public void SpawnKids()
{


var kidPrefab = GetUnit<BaseKid>(team.kid, kidNumber.kid1);
var spawnedKid = Instantiate(kidPrefab);
var randomSpawnTile = GridManager.Instance.GetKidSpawnTile();
randomSpawnTile.setUnit(spawnedKid);

}
private T GetUnit<T>(team Team, kidNumber Number) where T : BaseUnit
{
return (T)units.Where(u => u.team == Team).Where(n => n.kidNumber == Number).OrderBy(o => Random.value).First().unitPrefab;
}

Note that Visual Studio states that this script only has one reference.

in GridManager script:


public _Tile GetKidSpawnTile()
{
return tiles.Where(t => t.Key.y > height / 2 && t.Value.Spawnable).OrderBy(t => Random.value).First().Value;
}

In _Tile Script:

public void setUnit(BaseUnit unit)
{
if(unit.occupiedTile != null)
{
unit.occupiedTile.occupiedUnit = null;

}
unit.transform.position = transform.position;
occupiedUnit = unit;
unit.occupiedTile = this;
}

In GameManager script:


public void ChangeState(GameState newState)
{
switch (newState)
{
case GameState.GenerateGrid:
GridManager.Instance.GenerateGrid();
break;
case GameState.SpawnKids:
UnitManager.Instance.SpawnKids();
break;
case GameState.SpawnDaddy:
break;
case GameState.Player1:
break;
case GameState.Player2:
break;
case GameState.Player3:
break;
case GameState.Player4:
break;
case GameState.DaddyTurn:
break;
default:
throw new ArgumentOutOfRangeException(nameof(newState), newState, null);
}

Note that this is only called twice, once at the start of the game, and once in the GenerateGrid script to change the state to SpawnKids.

Please help, I don't understand what I'm doing wrong.