I am on a e-commerce website on a video from youtube and I am having problems with stripe

I am using Stripe to process payments from my website. Yesterday it was working ok. That was before I changed code my code so It can process payments using a customer_id. I am using test keys

 My code below. Help I'm still a beginner in django. I'm sorry my English is bad. 

from django.shortcuts import render

from django.contrib.auth.decorators import login_required

from django.conf import settings

import stripe

stripe.api_key =  settings.STRIPE_SECRET_KEY

# Create your views here.

@login_required

def checkout(request):

     publishKey = settings.STRIPE_PUBLISHABLE_KEY

   customer_id = request.user.userstripe.stripe_id

        print(customer_id)

     if request.method == 'POST':

           customer = stripe.Customer.retrieve(customer_id)

               token = request.POST['stripeToken']

            charge = stripe.Charge.create(

                 amount = 1000,

                 currency = 'usd',

                      customer = customer,

                   description = 'Example Charge',

                )

      context = {'publishKey':publishKey}

    template = 'checkout.html'

     return render(request, template, context)

The error I am getting is below

File "C:\Program Files\Python37-32\lib\site-packages\django\core\handlers\exception.py" in inner

  34.             response = get_response(request)

File "C:\Program Files\Python37-32\lib\site-packages\django\core\handlers\base.py" in _get_response

  126.                 response = self.process_exception_by_middleware(e, request)

File "C:\Program Files\Python37-32\lib\site-packages\django\core\handlers\base.py" in _get_response

  124.                 response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "C:\Program Files\Python37-32\lib\site-packages\django\contrib\auth\decorators.py" in _wrapped_view

  21.                 return view_func(request, *args, **kwargs)

File "C:\Users\Patrice\Desktop\ecommerce web\ecommerce\checkout\views.py" in checkout

  22. description = 'Example Charge',

File "C:\Program Files\Python37-32\lib\site-packages\stripe\api_resources\abstract\createable_api_resource.py" in create

  22.         response, api_key = requestor.request("post", url, params, headers)

File "C:\Program Files\Python37-32\lib\site-packages\stripe\api_requestor.py" in request

  121.         resp = self.interpret_response(rbody, rcode, rheaders)

File "C:\Program Files\Python37-32\lib\site-packages\stripe\api_requestor.py" in interpret_response

  372.             self.handle_error_response(rbody, rcode, resp.data, rheaders)

File "C:\Program Files\Python37-32\lib\site-packages\stripe\api_requestor.py" in handle_error_response

  151.         raise err

Exception Type: CardError at /checkout/

Exception Value: Request req_En9Ipi3bygWUWY: Cannot charge a customer that has no active card

--
You received this message because you are subscribed to the Google Groups "Django users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscribe@googlegroups.com.
To post to this group, send email to django-users@googlegroups.com.
Visit this group at https://groups.google.com/group/django-users.
To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/04423272-5bf9-4b26-9963-c180b926c909%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.