1. Make sure all of the following are correct when installing.

    /** The name of the database for WordPress */
    define( 'DB_NAME', 'database_name_here' );
    
    /** MySQL database username */
    define( 'DB_USER', 'username_here' );
    
    /** MySQL database password */
    define( 'DB_PASSWORD', 'password_here' );
    
    /** MySQL hostname */
    define( 'DB_HOST', 'localhost' );
    
    /** Database Charset to use in creating database tables. */
    define( 'DB_CHARSET', 'utf8' );
    
    /** The Database Collate type. Don't change this if in doubt. */
    define( 'DB_COLLATE', '' );

, then maybe you my hand is out of control switched the database to Mariadb, because wamp USES Mysql by default. Even though you have set up a corresponding database in Mariadb and have authorized it, it still doesn’t work.


switch back, right click, as shown in the picture below: