⚡☢️ "Error 500 - Could not create invoice" on lightning payment

[Tirodem]

Context

Trying to pay a 20CHF order with Lightning, I met this error

Theory

Here the status on /admin/lightning: Considering my cart: The invoice creation error might be related to order amount > available amount on some channels.

Considerations

• In e-commerce, the further a customer goes on a buying funnel, the more a breaking error is, and the higher the chance are that 1/ the customer won't retry this order 2/ the customer won't go back on this website if that's the 1st try ; so, it's way better to inform & warn instead of saying "oops, something broke"

  Solution

  Yet to be decided 2 ways :

• help the seller to always have funded channels
  • with funding services
  • with notifications if one of X channels is under a defined treshold
• manage lightning proposition to the customer smarty
  • pre-check lightning invoice generation availability before pushing the payment mean to the customer
  • disable or warn about lightning payment if KO
  • make invoice generation call on "checkout" proceed click & process error without leaving the /checkout page in case of error (that'll allow customer to choose another payment mean)
  • 👀👍 in a general manner, this one seem very fine to me, we only display /order if there's a paid order or an order with a QR Code to display ; otherwhise, we stay on /checkout page and ask customer to change payment mean

[coyotte508]

We should check the logs to see the real cause of the error

[Tirodem]

Tell me where I can find them of if I have to trigger the error again for you to monitor it 👌

[coyotte508]

You can ssh into the machine and do:

• pm2 log bootik2 for dev-bootik2 logs
• pm2 log bootik-instance for dev-bootik logs