• Hello guys, firstly I know this is a common error and can be fixed easily by go to admin dashboard -> setting -> permanlink -> update URL to /%category%/%post_name%/ ( or update .htaccess file).
    In my case, I rename default category from “uncategoried” to “blog” , and the post url will like this: domain/blog/%post_name% . Everything works well in my testing and local environment.
    I use Duplicator plugin to deploy website to production environment (I update permanlink after that). And error appears. I have some other categories such as news, events ,… (ex: domain/news/%post_name%) ,all of them work well except “blog” . If I change slug of “blog” category to something likes “blog1”, “blog2” , post URLs work again. I also use w3 total cache in my website, but I dont know what exactly the error is (duplicator, w3tc, .htacess , etc…. ) .

    • This topic was modified 4 years, 5 months ago by Jan Dembowski. Reason: Moved to Fixing WordPress, this is not an Developing with WordPress topic
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  • A few migration plugins require you to go to the site permalinks and click update a few times. (even if the setting seems correct there). I know for sure All In One WP migration gives a specific alert asking to go to Settings >> Permalink and click save a few times.

    You may also try purging server side cache after a deploy. (through Total Cache settings)

    Thread Starter tomcatwpdev

    (@tomcatwpdev)

    @nagpai Thank you for your reply,
    Unfortunately, After migrating, I tried both clear cache (w3tc) and update permalink several times, but it was still not working

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