What could be causing the 'PDOException' error in the PHP CMS installation?

The 'PDOException' error in a PHP CMS installation could be caused by a database connection issue, such as incorrect database credentials or a missing database. To solve this error, check the database connection settings in your PHP configuration file and ensure they are correct. 

try {
    $pdo = new PDO('mysql:host=localhost;dbname=database_name', 'username', 'password');
} catch (PDOException $e) {
    die('Error: ' . $e->getMessage());
}

Keywords

PDOException PHP CMS installation error

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