javascript - "No response has been set. Is this being used in an async call that was not returned as a promise to the intent handler?"使用 js

Question

这是生成错误的代码，此意图在被调用时生成的完整响应是“未设置任何响应。这是在异步调用中使用的，但未作为对意图处理程序的 promise 返回？”我应该怎么做才能纠正它？

app.intent('getCrypto', (conv,{crypto="ethereum",cryptoactions="price"}) =>{
     fetch('https://api.coinmarketcap.com/v1/ticker/').then(response => {
       return response.json();
     }).then(data => {
          for (let i = 0; i < data.length - 1; i++) {
            if (data[i].id === "bitcoin")
               conv.data.price=data[i].price_usd;
               conv.ask(`${conv.data.price} is the current value of ${crypto}`);
               return response.json();
          }

     }).catch(err => {
          return conv.ask(`${cryptoactions} of ${crypto} is not available. Would you like to know about another one?`);
     });
});

Answer 1

错误消息描述了确切的问题“这是在未作为对意图处理程序的 promise 返回的异步调用中使用的吗？”

您应该从您的意图处理程序返回一个异步调用。因此，在调用 fetch 之前添加一个 return 应该可以解决这个问题。