触发异常,状态码:<class 'requests.exceptions.ProxyError'>,信息:HTTPSConnectionPool(host='api.hbdm.com', port=443): Max retries exceeded with url: /api/v1/contract_position_info?AccessKeyId=35711988-98fe74a4-nbtycf4rw2-6d0f8&SignatureMethod=HmacSHA256&SignatureVersion=2&Timestamp=2019-12-30T09%3A59%3A01&Signature=%2FUAdYGDmXi%2BuGEWv1foBLEpRuoFK0%2Flu4%2F0Z8kLF0Pg%3D (Caused by ProxyError('Cannot connect to proxy.', OSError(0, 'Error')))