我在windows操作系统中开发了我的应用程序，并在ngrok的帮助下集成了Stripe webhook。一切都很顺利，我能够从webhook接收事件。但是一旦我把它移到AWS云上的EC2示例，它就给我抛出了一个错误。
错误：（在Stripe Dashboard Webhook尝试部分）
Webhook错误：第一个参数的类型必须是string或Buffer、ArrayBuffer或Array的示例或类似于Array的Object。接收未定义
奇怪的是，没有改变任何一段代码，它仍然在Windows上工作。
完整错误：

TypeError [ERR_INVALID_ARG_TYPE]: The "key" argument must be of type string or an instance of Buffer, TypedArray, DataView, or KeyObject
. Received undefined
    at prepareSecretKey (internal/crypto/keys.js:322:11)
    at new Hmac (internal/crypto/hash.js:111:9)
    at Object.createHmac (crypto.js:147:10)
    at Object._computeSignature (/home/psuser/middleware/node_modules/stripe/lib/Webhooks.js:65:8)
    at Object.verifyHeader (/home/psuser/middleware/node_modules/stripe/lib/Webhooks.js:107:36)
    at Object.constructEvent (/home/psuser/middleware/node_modules/stripe/lib/Webhooks.js:12:20)
    at /home/psuser/middleware/routes/carts.js:210:29
    at Layer.handle [as handle_request] (/home/psuser/middleware/node_modules/express/lib/router/layer.js:95:5)
    at next (/home/psuser/middleware/node_modules/express/lib/router/route.js:137:13)
    at /home/psuser/middleware/node_modules/body-parser/lib/read.js:130:5
    at invokeCallback (/home/psuser/middleware/node_modules/raw-body/index.js:224:16)
    at done (/home/psuser/middleware/node_modules/raw-body/index.js:213:7)
    at IncomingMessage.onEnd (/home/psuser/middleware/node_modules/raw-body/index.js:273:7)
    at IncomingMessage.emit (events.js:327:22)
    at endReadableNT (_stream_readable.js:1327:12)
    at processTicksAndRejections (internal/process/task_queues.js:80:21) {
  code: 'ERR_INVALID_ARG_TYPE'
}
The "key" argument must be of type string or an instance of Buffer, TypedArray, DataView, or KeyObject. Received undefined

// End point Code

router.post('/webhook', async (request, response) => {
  const sig = request.headers['stripe-signature'];
  let event;

  try {
    event = stripe.webhooks.constructEvent(request.rawBody, sig, process.env.STRIPE_WEBHOOK_SECRET);
  }
  catch (err) {
    console.log(err.message);
    return response.status(400).send(`Webhook Error: ${err.message}`);
  }
});

// In app.js 

app.use(express.json({
  // Because Stripe needs the raw body, we compute it but only when hitting the Stripe callback URL.
  verify: function (req, res, buf) {
    var url = req.originalUrl;
    if (url.endsWith('/webhook')) {
      req.rawBody = buf.toString()
    }
  }
}));