PDOStatement :: execute（）：SQLSTATE [HY093]エラー

Question

このエラーが表示されます。手伝ってくれませんか？おかげ

警告：PDOStatementには::実行（）：SQLSTATE [HY093]：無効なパラメータ番号：バインド変数の数がCでトークンの数と一致していません：\ xamppの\ htdocsに\ add.phpライン13上の

add.php

<?php 
require_once 'connect.php'; 
if (isset($_POST['date'], $_POST['name'])) { 
    $date = $_POST['date']; 
    $name = $_POST['name']; 
    $cac = $_POST['cac']; 
    $caa = $_POST['caa']; 
    $cc = $_POST['cc']; 
    $dac = $_POST['dac']; 
    $daa = $_POST['daa']; 
    $dc = $_POST['dc']; 
    $query = $db->prepare("INSERT INTO transaction SET date = ?, name = ?, cac = ?, caa = ?, cc =, dac = ?, daa = ?, dc = ?"); 
    $insert = $query->execute(array($date, $name, $cac, $caa, $cc, $dac, $daa, $dc)); 
    header("refresh:11;url=index.php"); 
} 
else {echo "We have a problem"; 
    header("refresh:1;url=index.php"); 
    } 
?> 

Answer 1

INSERT INTO transaction SET date = ?, name = ?, cac = ?, caa = ?, cc = ?, dac = ?, daa = ?, dc = ? 
-----------------------------------------------------------------------^ 

ミス?cc =