MySQL Error: Could not connect to the database server. Check your config.php file for the correct Host, User name, and Password.

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MySQL Error: Could not connect to the database server. Check your config.php file for the correct Host, User name, and Password.
MySQL Query ( SELECT count(DISTINCT news.id_news) FROM news INNER JOIN cat_news ON news.id_news=cat_news.id_news WHERE pubblica = 1 AND nomeEn IS NOT NULL AND nomeEn <> '' AND cat_news.id_categoria= ) Failed. Error: Access denied for user 'c7adminlago'@'localhost' (using password: YES)