@baris Thanks, but there's no way to just get all the most recent posts in a category, including all subcategories posts? The templating engine doesn't seem to allow anything too complicated (nor anything complicated at all in fact), so I don't think I can like aggregate the different arrays and sort them...
Maybe it's something that you should be able to configure? Subcategories is a quite recent addition so it's normal that no such thing has been implemented / thinked about yet, but maybe it's something you might want to have.
The common causes for a session mismatch error are usually one of the following:
1. Mis-configured URL parameter in your config.json file
If you have a misconfigured url value in your config.json file, the cookie may be saved incorrectly (or not at all), causing a session mismatch error. Please ensure that the link you are accessing your site with and the url defined match.
2. Improper/malformed cookieDomain set in ACP
Sometimes admins set this value without realising that they probably don't need to set it at all. The default is perfectly fine. This is what the config looks like:
Cookie Domain setting
If this is set, you'll want to revert the setting by editing your database directly: