GreXXL BENON_ on order to properly help you we need more info like the error message from the browser console and the error log. Also we will need the output of pho flarum info.
BENON_ luceos Well, I can login and logout fine, but when I want to publish it, there's something like that.
luceos BENON_ yeah I just got the email, thanks. I can confirm the issue, your webserver is Litespeed, the 404 is returned by PHP though. I have no experience with those, can you share your litespeed config for the website?
luceos My experience with litespeed is too limited to be able to help, I'm sorry. Can you disable debug mode if you have that enabled?
BENON_ luceos This is a setting by default on litespeed like it doesn't enable debug mode do I need to disable it?
BENON_ it turns out that the problem is in the extension for filter and in the auto merge menu if I activate the feature then I can't post a discussion but when I deactivate it normally it's back please Thanks for the response 🙏