Can't add a new Payment method

-- HikaShop version -- : 4.7.4
-- Joomla version -- : 3.10.12
-- PHP version -- : 8.1.21
-- Browser(s) name and version -- : Brave 1.52.130

I am trying to set up the new PayPal Checkout plugin, but I can't seem to add any new Payment Methods. If I click the New button I am taken to a white screen, with no formatting, that just shows a list of HikaShop menu items. I have attached a screenshot of the page.

I have installed the latest version of Hikashop again in case something was missed. I see no other errors or have any issues with HikaShop.

Has anyone ever seen this issue and know of a fix?

Thanks,
Eric

You were spot on. It was the old Platron plugin. Since I would never be using that anyway I removed it. Everything works as it should now.

Thank you for the help!

I have the same issue.
Thank you for this post, I solve it deleting the old Platron folder.