DoesNotExist: Pledge matching query does not exist.
https://sentry.lqdn.fr/lqdn/soutien/issues/6/
DoesNotExist: Pledge matching query does not exist.
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File "payment/views.py", line 296, in post
pledge = Pledge.objects.get(pk=request.POST['vads_trans_id'])
DoesNotExist: Pledge matching query does not exist.