Quote Originally Posted by mc12345678 View Post
What version of the software? Is the version in use the latest version?
Yes v.5.0.0 as per my first post.

I was also taken aback .... and yes I did change the PHP version from 7.4 to 7.3 before I read your post - subsequently the problem still exists without that error being thrown, so obviously it is something else.

Here is another hint possibly, maybe not - worked fine when I created a new product earlier - then I wanted to check Sitemaps - found that SiteMapXML wasn't listed under admin/configuration or admin/tools so I checked admin/modules/plugin manager and it showed to my shock that SiteMapXML v.4.0 wasn't installed which it previously was, so I clicked install and it returned. The only change at all to SiteMapXML was to a file in this post https://www.zen-cart.com/showthread....49#post1377049 - after making that change all was fine.

I have not made any changes at all to any files in ZC or plugins since then (22/1).

So then I had to reconfigure SiteMapXML in accordance with this in the CEON installation readme;
HTML Code:
OPTIONAL but RECOMMENDED] Configure the SitemapXML (formerly “Google Sitemap”) Module
If the store uses the SitemapXML (Google Sitemap) module, it needs to be configured to work better with static URIs.

Otherwise, the store's rankings may be penalised because of links in the sitemap redirecting to other links.

Go to Configuration > Sitemap XML in the Zen Cart Admin.

Newer versions of the module have the option “Using parameter language in links”. If this option exists, make sure to set it to “false”.

Older versions of the module have the option “Generate language_id for default language”. If this option exists, make sure to set it to “false”.
As I said - still the problem exists - my workaround at present is to manually generate each url, i.e. untick the auto generate box type it in.

cheers, Mike