Django Polaris not processing pending deposits

Question

I have implemented the integrations:

        register_integrations(
            deposit=MyDepositIntegration(),
            withdrawal=MyWithdrawalIntegration(),
            fee=fee_integration,
            sep6_info=info_integration,
            customer=MyCustomerIntegration(),
            sep31_receiver=MySEP31ReceiverIntegration(),
            rails=MyRailsIntegration(),
            quote=MyQuoteIntegration(),
        )

And I've run python manage.py process_pending_deposits but it doesn't seem to be handling the deposits passed unto it from the poll_pending_deposits function. I don't know why, could someone help please?