Shopify：“应用必须具有频道记录才能创建店面访问令牌

Question

当我尝试从Koa.js服务器向StoreFrontAccessToken api提交请求时，启用了销售渠道的应用程序正在收到此响应：

const returnStoreFrontToken = async (generalAccessToken, shopHost) => {
 const storeFrontAccessTokenUrl = `https://${shopHost}/admin/api/2019-10/storefront_access_tokens.json`;

 // get a list of current storefront access tokens
 try {
  const getResponse = await fetch(storeFrontAccessTokenUrl, {
   method : "get"
   , headers : {
    "X-Shopify-Access-Token" : generalAccessToken
   }
  });
  const data = await getResponse.json();
  console.log(data, `=====data after get token(s)=====`);
  }
 } catch (e) {
  console.log(e, `=====error=====`);
 }
};

// usage in server.js
app.use(async ctx => {
  const {shop, accessToken} = ctx.session;
  console.log(`=====inside the middleware after verifyRequest()=====`);

  const returnedToken = await returnStoreFrontToken(accessToken, shop); // 'App must have a channel record to create a storefront access token.

看起来像其他人一样也有此错误，但尚未发布解决方案：https://community.shopify.com/c/Shopify-APIs-SDKs/How-to-access-or-create-Storefront-token/m-p/569178/highlight/false#M37936

有人有这个问题的经验，知道如何解决吗？