如何修复此代码中的“在没有活动异常的情况下终止调用”错误？

问：

首先，我是一名学生，所以代码可能不是一个高效或写得很好的代码。对不起。但是，如果它不打扰您，我可以使用一些帮助。

以下是我在主程序中使用的主程序和musical_chairs函数。

void musical_chairs(IntQueueHW6 &my_queue, unsigned int idx,unsigned int remaining_player_num, vector<int> &players)
{

    this_thread::sleep_until(chrono::system_clock::now() + chrono::seconds(2));
    mtx.lock();
    if(!(my_queue.isFull()))
    {
        my_queue.enqueue(idx);// my_queue is a queue with size of total_player_num-1
        cout << "Player " << idx << " captured a chair at ";
        current_time();
        cout << "." << endl;
    }
    else
    //**************** I believe this block causing the error *******************
        not_capture(idx);
        for(int k = 0; k < remaining_player_num; k++)
        {
            if(players[k] == idx)
            {
                players.erase(players.begin()+k);
                break;
            }
        }
    }
    mtx.unlock();
//*************** I believe this block causing the error **********************
}

int main()
{
    unsigned int total_player_num, total_round_num, remaining_player_num;
    cout << "Welcome to Musical Chairs game!" << endl << "Enter the number of players in the game: " << endl;
    cin >> total_player_num;
    remaining_player_num = total_player_num;
    total_round_num = total_player_num - 1;
    cout << "Game Start!" << endl << endl;

    vector<int> players(total_player_num); // creating a vector consists of players IDs
    for(int i=0; i < total_player_num; i++)
    {
        players[i] = i;
    }


    while(remaining_player_num != 1) // until only one player left in te game
    {
        IntQueueHW6 my_queue(total_round_num); // creating a queue with size total_round_num for chair slots
        vector<thread> threads(total_player_num); // create a thread vector for all players

        cout << "Time is now ";
        current_time();
        cout << endl;
        int players_length = players.size();

        for(int i = 0; i < players_length; i++)
        {
            int idx = players[i];
            threads[idx] = thread(&musical_chairs, ref(my_queue), idx, remaining_player_num, ref(players));
        }
        
        for(int i = 0; i < players_length; i++) //joining to threads
        {
            int idx = players[i];
            if(threads[idx].joinable())
            {
                threads[idx].join();
            }
        }
         
        display_remaining_players(players); // changing variables accordingly
        remaining_player_num --;
        total_round_num -- ;
        my_queue.clear();
    }

    unsigned int winner_id = players[0];
    winner_func(winner_id); // this function displays the winner

    return 0;
}

我编写了一个程序，使用多线程模拟“音乐椅”游戏。 当我运行主程序时，我收到“在没有活动异常的情况下终止调用”错误。由于我在互联网上的研究很少，这可能是因为线程超出了范围，但如果是这样，我不知道如何解决它。谁能解释一下如何解决？如果错误是由不同的事情发生的，您能解释一下吗，您能帮我修复此代码吗？提前致谢。