一键更新时出现此问题，请问各位高手如何解决？先谢了！

准备更新的包：
vnstation : 2.7.0 -> 2.7.1

点击下方按钮开始更新

开始更新：vnstation
更新失败：vnstation
b" WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', OSError(0, 'Error'))': /vnpy/vnstation/vnstation-2.7.1.tar.gz\r\n WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', OSError(0, 'Error'))': /vnpy/vnstation/vnstation-2.7.1.tar.gz\r\n WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', OSError(0, 'Error'))': /vnpy/vnstation/vnstation-2.7.1.tar.gz\r\n WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', OSError(0, 'Error'))': /vnpy/vnstation/vnstation-2.7.1.tar.gz\r\n WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', OSError(0, 'Error'))': /vnpy/vnstation/vnstation-2.7.1.tar.gz\r\nERROR: Could not install packages due to an OSError: HTTPSConnectionPool(host='vnpy-pip.oss-cn-shanghai.aliyuncs.com', port=443): Max retries exceeded with url: /vnpy/vnstation/vnstation-2.7.1.tar.gz (Caused by ProxyError('Cannot connect to proxy.', OSError(0, 'Error')))\r\n\r\n"

部分包更新失败！

这个折磨了我半天的问题已解决。
在“Internet 选项”——“连接”——“局域网设置”——“代理服务器”里的对号去掉即可。