I’m getting the same problem now. I was suddenly getting some database-related errors and ended up resetting the database root password and now cannot access phpmyadmin from cyberpanel. I also get the error listed in this topic Wordpress: Installation failed. Error message: [404] when I try to create a new wordpress site.
Is there a way to update CyberPanel’s databse credentials? If not, what is the default mariadb root password so that I can revert it?