MySQL : SQLSTATE[HY000] [1045] Access denied for user 'root'@'localhost' (using password: NO) . DB_H

MySQL : SQLSTATE[HY000] [1045] Access denied for user 'root'@'localhost' (using password: NO) . DB_HOST set to localhost
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MySQL : SQLSTATE[HY000] [1045] Access denied for user 'root'@'localhost' (using password: NO) . DB_HOST set to localhost
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set 'root'@'localhost' . [1045] user password: DB_HOST (using to SQLSTATE[HY000] NO) : denied for localhost Access MySQL