Hi! Like this error message is saying, you need to learn more about debugging. No one will be able to help if the cause of this issue is unknown.
Debugging in WordPress
If the error appeared due to problem during update, you can try to update your site manually:
Updating WordPress
If you have a backup just restore it from it and try to update again. If you have no backups, you need to think about how to do them automatically on your hosting or with some other tool strait away. Make a backup before trying anything else in case that things go worse.
Hello Olga,
I downloaded the latest version of wp and did the upgrade in my pc manually. Later, I uploaded all the files via FTP.
It seemed the most reasonable option for me.
But now I am seeing that all the pages expect the homepage is showing 404 error
How to resolve it?
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This reply was modified 5 years, 8 months ago by
likewise1129.
You need to create the .htaccess file manually:
htaccess
My wp blog is not the main site. It’s in a sub-directory.
Anyway, the 404’s have been sorted.
Just in case, .htaccess is applied to the folder in which it exists and down to all subfolders. In subfolders, you can have different .htaccess files with different rules or can have nothing and rules from the upper level will be applied.