I have this error when I try to convert T::Moment to u64:

Here is my code:

#[derive(Clone, Encode, Decode, PartialEq, RuntimeDebug, TypeInfo)]
#[scale_info(skip_type_params(T))]
    pub struct PayInstallmentOrder<Account, Balance, Time> {
        pub creator: Account,
        pub created_at: Time,
        pub periods_left: u8,
        pub paid: Balance,
        pub nft_id: [u8; 16],
    }
#[pallet::config]
    pub trait Config: frame_system::Config {
        /// Because this pallet emits events, it depends on the runtime's definition of an event.
        type Event: From<Event<Self>> + IsType<<Self as frame_system::Config>::Event>;

        type Currency: ReservableCurrency<Self::AccountId> + Currency<Self::AccountId>;

        type NFTRandomness: Randomness<Self::Hash, Self::BlockNumber>;

        type WeightInfo: WeightInfo;

        /// Deposit required for per byte.
        #[pallet::constant]
        type DataDepositPerByte: Get<BalanceOf<Self>>;

        type Moment: Parameter
            + Default
            + Scale<Self::BlockNumber, Output = Self::Moment>
            + Copy
            + MaxEncodedLen
            + StaticTypeInfo
            + MaybeSerializeDeserialize
            + Send;

        type Timestamp: Time<Moment = Self::Moment>;
    }
impl<T: Config> Pallet<T> {
    pub fn get_installment_orders() -> Vec<PayInstallmentOrder<T::AccountId, BalanceOf<T>, T::Moment>> {
            OrderByTokenId::<T>::iter_values().collect()
        }
}

// then I do tightly coupling in another pallet to call get_installment_orders() and take the created_at field in orders

I have this error when I try to convert T::Moment to u64 in the other pallet