404 error on posts, categories, and tags page. How to fix?

Question

WordPress

Hello. I have such a problem. I write in advance that the problem is only with this topic. When I put another topic, this problem does not exist. I create posts, categories and tags, everything is created without problems and displayed in the admin panel, but when I want to go to them on the site, I get a 404 error. How to fix it? What could be the problem? What code to provide?

Answer 1

Most likely, the theme does not provide the logic for the output of this content. Or she's crooked. The presence in the admin panel does not guarantee anything.