我正在嘗試解決這個 golang 練習https://github.com/loong/go-concurrency-exercises/tree/master/1-producer-consumer。我想我已經接近解決方案了，但是我遇到了死鎖錯誤davecheney      tweets about golangbeertocode      does not tweet about golangironzeb         tweets about golangbeertocode      tweets about golangvampirewalk666  tweets about golangfatal error: all goroutines are asleep - deadlock!這是我的代碼func producer(stream Stream) (tweets []*Tweet) {    for {        tweet, err := stream.Next()        if err == ErrEOF {            return tweets        }        tweets = append(tweets, tweet)    }}func consumer(tweets []*Tweet) {    for _, t := range tweets {            if t.IsTalkingAboutGo() {            fmt.Println(t.Username, "\ttweets about golang")        } else {            fmt.Println(t.Username, "\tdoes not tweet about golang")        }    }}func main() {    start := time.Now()    stream := GetMockStream()    data := make(chan []*Tweet)    var wg sync.WaitGroup    wg.Add(3)    // Producer    go func() {        tweets := producer(stream)        data <- tweets    }()    // Consumer    go func() {        defer wg.Done()        tweets := <-data        consumer(tweets)    }()    wg.Wait()    fmt.Printf("Process took %s\n", time.Since(start))}你的解決方案在哪里失?。?