Error when clicking on download file link in shopping basket

[14Steve14]

Phoenix 1.0.9.0 PHP8

Might be one for @raiwa as when I turn off Name based URLs as supplied to pro version everything seems to work correctly. My test site does not have Name based URLs added and everything seems to work as it should.

I have a bit of a strange problem that has been pointed out by a customer.

This customer has several download files in his shopping basket and has decided to not purchase at this time so wants to add the items into his wishlist. When he clicks on the link to the product in his shopping basket rather than go to the product page it looks like he is being directed to our 403 page not found page.

We can log in to his account and can replicate the problem. If I log in to my own account and add a download file into the basket I get the same problem. If I add any other physical product into the basket and click on the link I am taken to the product page as I expect. It seems only to be the download files where the problem occurs.

There are no errors in the error log files as I assume the site thinks it doing the right thing with the 403 error page.

Has anyone else come across anything like this or can anyone help with a way to diagnose the problem?

[14Steve14]

I am going to have to post this in the name based urls section as when you turn that addon off the error goes away.