EfekanKksal How do I install the Media (youtube) plugin? Is it with composer.json? I sent the file to the required directory.
Digital You need Composer to install extensions. Also, make sure your hosting provider allows you to access SSH. All questions regarding s9e/mediaembed can be posted here. FYI Alternative media extension: https://discuss.flarum.org/d/17770-friendsofflarum-formatting
