Here. This is a necessary part of a website that cannot exist without your site. Therefore, if the connection is interrupted, the site will also be interrupted. Solution in most cases, this common WordPress error is WP config. Caused by invalid credentials inside PHP. But I have a solution with other possible killers. 1. WP config PHP confirms that the file contains all the login information (database name, user name, password, and server) for the database entered during installation. Found in the root directory of the WordPress installation. If you have problems connecting your site to the database (especially if you have changed the above information), check your credentials here to make sure they match. 2. when accessing WP admin, there is a problem with the database, which needs to be modified in WordPress. In this case, yoursite. If you go to com\/wp-admin, other types of error messages are displayed indicating the need to recover the database. In this case, WP config. Add the following line to PHP to enable this feature: Justice (\
