問題描述vue項目上線后，無法獲取部分接口數(shù)據(jù)，本地測試無問題（初步估計網(wǎng)速慢導致），怎么優(yōu)化處理問題出現(xiàn)的環(huán)境背景及自己嘗試過哪些方法上線后出現(xiàn)的問題相關(guān)代碼// 請把代碼文本粘貼到下方（請勿用圖片代替代碼）_getSongMenu() {            if(!this.disc.dissid) {                this.$router.push('/recommend')                return             }             getSongMenu(this.disc.dissid).then((res) => {                if(res.code === ERR_OK) {                    console.log(res.cdlist[0].songlist)                    // this.songs = this._normalizeSongs(res.cdlist[0].songlist)                     this._normalizeSongs(res.cdlist[0].songlist, (rest) => {                        this.songs = rest                     })                 }             })         },         _normalizeSongs(list, callback) {            if(!list) {                return             }            let rest = []            let index = 1             list.forEach((musicData) => {                if(musicData.songid && musicData.albummid !==undefined) {                    let promise = getSongVkey(musicData.songmid) //獲取歌曲filename及vkey                     promise.then((res) => {                        if(res.code === ERR_OK) {                            const resData = res                            const filename = resData.req_0.data.midurlinfo[0].filename                            const vkey = resData.req_0.data.midurlinfo[0].vkey                            const newSong = createSong(musicData, filename, vkey)                            // console.log(newSong)                             rest.push(newSong)  //將獲取到的歌曲加入到數(shù)組中                             if(index === list.length) {                                 callback && callback(rest)                             }                             index++                         }                     })                 }             })         }通過songs屬性傳遞songs這個數(shù)組數(shù)據(jù)從disc.vue->music-list.vue->song-list.vue本地點擊測試能獲取到vkey，如圖線上卻獲取不了中間件music-list.vue,放線上后會有一段loading時間你期待的結(jié)果是什么？實際看到的錯誤信息又是什么？我該在哪里改成延時嗎，filename都能獲取，就vkey獲取不了項目地址