问题遇到的现象和发生背景
启动ros机械臂碰撞检测时
问题相关代码，请勿粘贴截图
[ WARN] [1648547479.279468897]: SEVERE WARNING!!! Attempting to unload library while objects created by this loader exist in the heap! You should delete your objects before attempting to unload the library or destroying the ClassLoader. The library will NOT be unloaded.
