测试问题

你好，已经到测试阶段了，但出现了这个问题，请问该怎么解决？
requests.exceptions.ConnectionError: HTTPConnectionPool(host='127.0.0.1', port=5050): Max retries exceeded with url: /launch_goal (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x0000021755093310>: Failed to establish a new connection: [WinError 10061] 由于目标计算机积极拒绝，无法连接。'))
