Error: Missing payment details

Hello, we are integrating the Web-button - pre-authorization FLOW (https://developers.satispay.com/docs/web-button-auth)

When creating the button, while display the qrcode, after confirm the authorization on mobile app, the web button remains in state "La richiesta è stata accettata

Attendi qualche secondo..." and in browser console I see this error:

Error: Missing payment details web-button.ts:151:23
ioInitializeStandardWebButton web-button.ts:151
fromOption pipeable.js:162
pipe pipeable.js:13
ts web-button.ts:149
Webpack 3
webpack_require

As we are integrating the preauthorization flow, what payment details does expect the web button widget?