Ped spawn error

Aldebaraan

I'm getting a NullReferenceException at "if (ped.Exists())" line in the following script:

    private Ped SpawnRandomPed(List<Ped> ListPeds, string[] ModelsList, string[] WeaponsList, int Accuracy, int Health, int BodyArmor, int RelationshipGroup)
    {
        string ModelName = RandomChoice<string>(ModelsList);
        string WeaponName = RandomChoice<string>(WeaponsList);

        PedHash pedSpawn;
        WeaponHash weaponGive;

        if (!Enum.TryParse<PedHash>(ModelName, true, out pedSpawn))
        {
            Wait(2000);
            throw new FormatException("Ped name " + ModelName + " does not exist!");
        }

        if (!Enum.TryParse<WeaponHash>(WeaponName, true, out weaponGive))
        {
            Wait(2000);
            throw new FormatException("Weapon name " + WeaponName + " does not exist!");
        }


        Vector3 PositionToUse;
        if (ListPeds == spawnedBodyguard)
        {
            PositionToUse = Game.Player.Character.GetOffsetInWorldCoords(new Vector3(-8, 0, 0));
        }
        else
        {
            if (Game.Player.Character.IsInVehicle())
            {
                PedMinSpawnDistanceReal = PedMinSpawnDistance + 60;
                PedMaxSpawnDistanceReal = PedMaxSpawnDistance + 60;
            }
            else
            {
                PedMinSpawnDistanceReal = PedMinSpawnDistance;
                PedMaxSpawnDistanceReal = PedMaxSpawnDistance;
            }
            RandomDistance = Function.Call<float>(Hash.GET_RANDOM_FLOAT_IN_RANGE, PedMinSpawnDistanceReal, PedMaxSpawnDistanceReal);
            PositionToUse = Game.Player.Character.Position.Around(PedMaxSpawnDistance);
        }

        Ped ped = World.CreatePed(pedSpawn, PositionToUse);

        WritePedDataToFile(ModelName, WeaponName, Accuracy, Health, BodyArmor, RelationshipGroup);

        if (ped.Exists())
        {
            if (ListPeds == spawnedBodyguard)
            {
                Function.Call(Hash.SET_PED_AS_GROUP_MEMBER, ped, relationshipGroupPlayer);
                ped.RelationshipGroup = Game.Player.Character.RelationshipGroup;
                ped.CanBeTargetted = true;
                Function.Call(Hash.SET_PED_AS_GROUP_LEADER, Game.Player.Character, relationshipGroupPlayer);
            }
            else
            {
                ped.RelationshipGroup = RelationshipGroup;
            }
        }
    }

I don't know why this is happening. I even made a log (WritePedDataToFile) to see if there was anything wrong with the values but there is not.