jjgod

Oh, yeah, SERVER_SOFTWARE has been disabled, I modified wp-includes/vars.php and set $is_apache = 1, now is works.

Thanks very much! ??

Yes, I’m sure, because I’ve have tried to create .htaccess manually and it works, but the problem is that WP doesn’t generate it automatically for me…

BTW, I have tried to overwrite them with the backup, but those problems still exist…

Before this upgrade, everything is ok.