Nextcloud failed login without errors after update to 18.0.4

No, this is not a browser issue.
I searched for a long time, but found a solution. It’s all about updating CentOS packages. During the upgrade, the directory owner changed under the path / var / lib / php /. As a result, nginx could not create a new user session when entering the login password.
Changed the owner back to nginx - it worked, thanks.