Unable to buy jfree chart developper guide

[JohanThomass]

Hi,

I want to buy the jfree chart developper guide but I got this message "Payments can't be processed right now because of a technical issue. Try again in a few minutes" on the website https://efinery.myshopify.com

Maybe this website is not maintained any more ?

How could I get the latest guide please ?

Thanks,

Best regards

Johan

[trashgod]

See also issues #302 and #253.