Create a new page from a category link and populate it with entries from that category.

I previously had this working on an older site, but because of shared hosting between sites, I need to update the PHP version, which causes the old EE 2.6 site to not work… meaning I’ve had to rebuild it in EE 5.1.

The rebuild has been pretty straightforward and simple, except for this last thing. (And non working email form plugin, which I hope to solve next).

All the channels, categories and entries have been set up and seem to be working on the home page, but when trying to navigate to one of the menu links (for example about) –> (site path)/index.php/(category), it goes to an error page like this:

Error The page you requested was not found.

The expected result is that it reloads the index page (one main template for all pages) but with a new url segment, which tells the channel codes for each type of content which category to render posts from.

Below is the menu code which works on the old site, and leads to an error page on the new one:

<div class="top_nav">
  {exp:channel:categories category_group="1" style="nested"}
   <a href="http://{path=%27{category_url_title}%27}" title="{category_name}" class="{if ">{category_name}</a>
  {/exp:channel:categories}
 </div>

The menu outputs correctly, and links to the expected url, but the page doesn’t show up.

Perhaps this is due to a change in how something is done from the old version to this version, or perhaps something needs to be configured somewhere to make it work - either way, I presume everyone has to deal with this to create any kind of dynamic content on their site across multiple pages, so there has to be an answer to it.