SQLSTATE[HY093]:所有参数都正确填写，语法正确

我收到以下错误：

SQLSTATE[HY093]: Invalid parameter number: number of bound variables does not match number of tokens in

代码如下：

$transactions_sql = "INSERT INTO transactions (usr, service, txn_id, orig_amount, currency, date, description, fee_amt, 
  fee_currency, fee_descr, fee_type, net_amt, status) VALUES ";
$transactions_sql_data = array_fill(0, count($transactions), "(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)");
$transactions_sql .= implode(",", $transactions_sql_data);
$stmt = $conn->prepare($transactions_sql);
$i = 1;
foreach ($transactions["data"] as $tr) {
  $stmt->bindValue($i++, $id, PDO::PARAM_INT);
  $stmt->bindValue($i++, $tr["service"], PDO::PARAM_STR);
  $stmt->bindValue($i++, $tr["id"], PDO::PARAM_INT);
  $stmt->bindValue($i++, $tr["amount"], PDO::PARAM_INT);
  $stmt->bindValue($i++, $tr["currency"], PDO::PARAM_STR);
  $stmt->bindValue($i++, $tr["created"], PDO::PARAM_STR);
  $stmt->bindValue($i++, $tr["description"], PDO::PARAM_STR);
  $stmt->bindValue($i++, $tr["fee_details"][0]["amount"], PDO::PARAM_INT);
  $stmt->bindValue($i++, $tr["fee_details"][0]["currency"], PDO::PARAM_STR);
  $stmt->bindValue($i++, $tr["fee_details"][0]["description"], PDO::PARAM_STR);
  $stmt->bindValue($i++, $tr["fee_details"][0]["type"], PDO::PARAM_STR);
  $stmt->bindValue($i++, $tr["net"], PDO::PARAM_INT);
  $stmt->bindValue($i++, $tr["status"], PDO::PARAM_STR);
}
$stmt->execute();

执行var_dump($transactions_sql)打印"INSERT INTO balance_transactions (usr, service, txn_id, orig_amount, currency, date, description, fee_amt, fee_currency, fee_descr, fee_type, net_amt, status) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?),(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?),(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)"，这是正确的(就问号数量而言 - $tr数组中只有三个数组(。