please give me instructions to solve the Question ? i run the project using php artisan server commant but it appears a connection problem

SQLSTATE[HY000] [1045] Access denied for user ‘root’@’localhost’ (using password: NO) (Connection: mysql, SQL: select * from sessions where id = sxxVXv6VTQl3sW2XaydEJPBITIpsmNKO898Pik2H limit 1)
i run the project and in the web server appears like this. please help to solve the question.

correct page when it runs