Error on RTCClient access.

While testing the rtcclient python library,i am coming across below error whenever i try accessing
"RTCClient" call.Could you please let me know how can i resolve this issue.

ERROR client.RTCClient: Failed GET request at with response:
ERROR client.RTCClient: Failed POST request at with response:

Environment details:
RTCClient python package version : 0.6.0
RTC Version : 6.0.3

Code Snippet:
url = "https://xxyy.com/ccm"
username = 'x'
password = 'y'
myclient = RTCClient(url, username, password, ends_with_jazz=False)

Log:
[RTC_Clientaccessissue.txt](https://github.com/dixudx/rtcclient/files/1074249/RTC_Clientaccessissue.txt)

Please note i am able to access RTC Server's url "https://xxyy.com/ccm" in web browser.