BOOKING SYSTEM ERROR : Code 500 // paymentOptions.paymentType = "package"

Hi everyone, when I set up the paymentOptions.paymentType to "package" before calling the checkoutBooking() function, the API returns the following error :

{code: 500, message: 'BOOKINGS_SYSTEM_ERROR'}

Here is the URL of the site :

https://www.nomadecycle.com/wip-v%C3%A9lo-%C3%A0-la-carte?siteRevision=308

Any other configuration of the paymentType property won't generate error. Could it be a problem from the API ?

Thank you