Webhook successfully registered but not received

[Ralph6]

I've followed Shopify's tutorial on how to build a app with NodeJS, but at part 8 (https://shopify.dev/tutorials/build-a-shopify-app-with-node-and-react/listen-for-store-events-with-w...) I've got stuck. The webhooks are successfully registered but not received (post route does not get fired). 

In my server.js file, I register the app/uninstalled webhook inside the afterAuth function like this:

const registration = await registerWebhook({
            address: `${PROCESS.env.HOST}/webhooks/app/uninstalled`,
            topic: 'APP_UNINSTALLED',
            accessToken,
            shop,
            apiVersion: ApiVersion.October19
            });

          if (registration.success) {
             console.log('Successfully registered webhook!');
          } else {
             console.log('Failed to register webhook', registration.result);
          }

Then later in the file, I listen for that webhook here:

const appUninstallWebhook = receiveWebhook({secret: SHOPIFY_API_SECRET_KEY});

  router.post('/webhooks/app/uninstalled', webhook, (ctx) => {
    console.log('received webhook: ', ctx.state.webhook);
    ctx.res.statusCode = 200;
  });

I see the webhook being registered, however when I delete the app running locally on NGROKin my test Shopify store, I do not see that webhook being triggered.

I tested this post route in Postman and it gives a 200 response, so I'm wondering where I am wrong. 

My app id is: 4284883.

Thank you in advance, 

Kind Regards 

[zhangdi994]

我也遇到了这个问题   请问解决了吗