调用导致错误

Question

使用提取呼叫时，出现以下错误！请帮忙弄清楚！

componentDidMount() {
      url = "api.openweathermap.org/data/2.5/weather? 
      lat=37.422&lon=-122.084&appid="+API_KEY;
      fetch(url)
      .then((response) => {
        console.log(response);
    })
  }