问部署PWA (渐进式Web App)到Firebase后，如何修复“加载资源失败:服务器响应状态为404 ()”错误？

EN

/**
 * Get's the latest forecast data from the network.
 *
 * @param {string} coords Location object to.
 * @return {Object} The weather forecast, if the request fails, return null.
 */

#Failed to load resource,the server respond with the status of 404()
function getForecastFromNetwork(coords) { 
  return fetch(`/forecast/${coords}`)
      .then((response) => {
        return response.json();
      })
      .catch(() => {
        return null;
      });
}