我是 VueJS 的初学者，希望得到您的帮助。

我正在尝试基于 OpenWeatherMap API 创建天气预报应用程序。

这个概念是这样的：

1. 在主页上输入某个位置并点击搜索按钮。 （在我的代码中，它是一个组件 Search.vue）
2. 重定向到另一个页面并显示结果 - 当前天气和未来 6 天的天气预报。 （组件Weather.vue）

我创建了具有两个一致的提取调用的函数。首先获取输入的输入 query 并从 Current Weather Data API 返回所需的数据。之后，函数运行第二次获取到 One 根据第一次获取的 latitude longitude 调用 API 。

一切正常并且显示良好，但我不明白为什么我有一个错误 Uncaught (in Promise) TypeError: Cannot readproperties of undefined (reading '1') in console:

有人知道如何修复此错误吗？

我的Search.vue（主页）组件：

<template>
    <div class="row">
        <div class="search-col col">
            <div class="search-box">
                <input 
                    type="text" 
                    class="search-bar" 
                    placeholder="Location" 
                    v-model="query">
                <router-link :to="{name: 'DetailedWeather', params: { query: query }}" class="btn-search">
                    <i class="fas fa-search"></i>
                </router-link>
            </div>
        </div>
    </div>
</template>

我的Weather.vue（天气结果显示页面）组件：

<template>
    <div class="row" v-if="typeof weather.main != 'undefined'">
        <div class="weather-col col">
            <div class="weather-app">
                <div class="weather-box">
                    <div class="weather-top-info">
                        <div class="clouds-level"><span class="icon"><i class="fas fa-cloud"></i></span> {{ weather.clouds.all }}%</div>
                        <div class="humidity"><span class="icon"><i class="fas fa-tint"></i></span> {{ weather.main.humidity }}%</div>
                    </div>
                    <div class="weather-main-info">
                        <div class="temp-box">
                            <div class="temp-main">{{ Math.round(weather.main.temp) }}</div>
                            <div class="temp-inner-box">
                                <div class="temp-sign">°C</div>
                                <div class="temp-max"><span class="icon"><i class="fas fa-long-arrow-alt-up"></i></span> {{ Math.round(weather.main.temp_max) }}°</div>
                                <div class="temp-min"><span class="icon"><i class="fas fa-long-arrow-alt-down"></i></span> {{ Math.round(weather.main.temp_min) }}°</div>
                            </div>
                        </div>
                        <div class="weather-desc">{{ weather.weather[0].description }}</div>
                        <div class="weather-icon">
                            <img :src="'http://openweathermap.org/img/wn/'+ weather.weather[0].icon +'@4x.png'">  
                        </div>
                    </div>
                    <div class="weather-extra-info">
                        <div>Feels like: <span>{{ Math.round(weather.main.feels_like) }}°C</span></div>
                        <div>Sunrise: <span>{{ weather.sys.sunrise }}</span></div>
                        <div>Sunset: <span>{{ weather.sys.sunset }}</span></div>
                    </div>
                </div>
            </div>
        </div>
        <div class="forecast-col col">
            <div class="row">
                <div class="forecast-item-col col"  v-for="day in forecastDays" :key="day">
                    <div class="forecast-box">
                        <div class="forecast-date">{{ forecast.daily[day].dt }}</div>
                        <div class="forecast-temp">{{ Math.round(forecast.daily[day].temp.day) }}°C</div>
                        <div class="forecast-icon"><img :src="'http://openweathermap.org/img/wn/'+ forecast.daily[day].weather[0].icon +'@2x.png'"></div>
                    </div>
                </div>
            </div>
        </div>
    </div>
    <div class="row">
        <div class="actions-col col">
            <router-link :to="{name: 'Search'}" class="btn btn-default">
                Back to search
            </router-link>
        </div>
    </div>
</template>
<script>
    export default {
        name: 'Weather',
        props: ['query'], //getting from homepage
        data() {
            return {
                api_key:'b7fe640e9a244244a6f806f3a6cbf5fc',
                url_base:'https://api.openweathermap.org/data/2.5/',
                forecastDays: 6,
                weather: {},
                forecast: {}
                
            }
        },
    methods: {
        fetchWeather(){
            // first call
            fetch(`${this.url_base}weather?q=${this.query}&units=metric&appid=${this.api_key}`)
            .then(response =>{ return response.json() }).then(this.setResults);
        },
        setResults(results){
          this.weather = results;

          // consistent second call
          fetch(`${this.url_base}onecall?lat=${results.coord.lat}&lon=${results.coord.lon}&exclude=current,minutely,hourly,alerts&units=metric&appid=${this.api_key}`)
          .then(data =>{ return data.json() }).then(this.setForecast);
        },
    
        setForecast(results){
            this.forecast = results
        },
    },
    created() {
        this.fetchWeather();
    }
</script>

我的 router/index.js 文件：

import { createRouter, createWebHashHistory } from 'vue-router'
import Search from '../components/Search.vue'
import Weather from '../components/Weather.vue'

const routes = [
  {
    path: '/',
    name: 'Search',
    component: Search
  },
  {
    path: '/detailed-weather',
    name: 'DetailedWeather',
    component: Weather,
    props: true
  }
]

const router = createRouter({
  history: createWebHashHistory(),
  routes
})

export default router