CreateMines.cs

private void CreateMines()
{
    while (mineCount > 0)
    {
        int index = Random.Range(0, base.transform.childCount);
        GameObject gameObject = base.transform.GetChild(index).gameObject;
        if (gameObject != null)
        {
            if (!gameObject.GetComponent<MinePlate>().isMine)
            {
                gameObject.GetComponent<MinePlate>().isMine = true;
                gameObject.GetComponent<MinePlate>().UpdateNearbyTileMineCounts();
                mineCount--;
            }
            continue;
        }
        break;
    }
}