Having recently upgraded to community edition ver. 2.3.5-p1, and I've run into an error when editing a product in the admin.
While logged in, if I goto a product page to edit, e.g.
hostname/admin/catalog/product/edit/id/1/key/0f76b993ab32a0a1700d6f5c1e0ecbe55ac5d88004e0971e2ac4f26cc0e837e5/
I see the product name, then an error and nothing else as shown in the photo.
The error text is: User Deprecated Functionality: Session ID is not used as URL parameter anymore. in /domains/hostname/http/vendor/magento/framework/Url.php on line 763
The only error I've been able to find in the logs is the same.
[2020-05-20 22:40:06] main.CRITICAL: User Deprecated Functionality: Session ID is not used as URL parameter anymore. in /domains/hostname/http/vendor/magento/framework/Url.php on line 763 [] []
I hope somebody can offer a suggestion? Note that Session IDs are not visible in the URLs on the consumer frontend. However I do have the site open in the same browser as the admin.
Thanks
Don