when I proceed with the payment by credit card there is this error:
I reproduced the error on the server but no errors are recorded.
I checked with Chrome Developer tools and I see this error:
The error URL leads to the following page:
The error seems related to the application
Il cliente non è autorizzato ad accedere a %resources - Its showing like "The customer is not authorized to access% resources"
As its trying to connect via api , and you have given parameter "self" - that means you needed access token of that customer and need to pass it for the same.
This error is coming because here your customer token either expired or invalid.
Kindly update the access token of API with the new one and then check it for the same.