调用unify报缺少参数

$payment = \EasyWeChat::payment(); // 微信支付 $payBill['body'] = '小萌商城'; $payBill['out_trade_no'] = $pay['pay_order_number']; $payBill['total_fee'] = $pay['total_price']; $payBill['spbill_create_ip'] = ''; $payBill['notify_url'] = 'https://wxapp.honeybot.cn/api/pay/notify'; $payBill['trade_type'] = 'JSAPI'; $payBill['openid'] = $open_id; $result = $payment->order->unify($payBill); // 如果成功生成统一下单的订单,那么进行二次签名 调用时候报参数错误