PHP PDO执行错误42000

I am getting a 42000 PDO error, I know this has to do with MySQL reserved words and I have put all my column names in backticks. However, this has not solved my problem. I am using Xampp on Windows 10, I am wondering if it could be an Apache or MySQL error and not a PHP syntax error?

class ItemList {

private $pdo;

public function add() {
  $stmt = $this->pdo->prepare("INSERT INTO `item` (`ID`, `userID`, `name`, `description`, `price`, `link`, `image`) 
                                           VALUES (NULL, :userID, :name, :description, :price, :link, :image)");

  $stmt->execute(array(':userID' => $_SESSION['userID'], 
                        ':name' => $_REQUEST["name"],
                        ':name' => $_REQUEST["name"],
                        ':description' => $_REQUEST["description"],
                        ':price' => $_REQUEST["price"],
                        ':link' => $_REQUEST["link"],
                        ':image' => $_REQUEST["image"]
                       )); 
    }
}

I know this may be a stupid easy answer and that I may just be stuck and I know there are some similar questions out there already. But any help would be greatly appreciated, thanks in advance.

    $stmt = $this->pdo->prepare("INSERT INTO item 
    ( userID, `name`, description, price, link, image) 
    VALUES ( :userID, :name, :description, :price, :link, :image)");

name is a reserved word in MySQL you only need it in backticks, also NULL values are not necessary for your statements.

Seems that you arr assigning a null value to a column that don't admit it.

if you are using an autoincrement ID you could omit the null value in value clause and the id reference in into clause

public function add() {
     $stmt = $this->pdo->prepare("INSERT INTO `item` 
        ( `userID`, `name`, `description`, `price`, `link`, `image`) 
 VALUES ( :userID, :name, :description, :price, :link, :image)");


}