This in fact seems to be a bug in the Quantum Project related to a deleted payment provider. I apologize for the inconvenience this has caused!
We will release an updated version of the project, but for now you can fix it by opening the ec_order_payment
table in SQL management studio and replacing all the entries where payment_method_id
is null to any of the GUIDs of the other orders.
Let me know if this works for you!
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items