Jsondecode error

[Nutan-Ust]

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "confluence_dumper.py", line 537, in
main()
File "confluence_dumper.py", line 471, in main
response = utils.http_get(page_url,verify_peer_certificate=settings.VERIFY_PEER_CERTIFICATE)
File "C:\Users\nuttan.kumari\PycharmProjects\Sale_services\confluence-dumper\utils.py", line 39, in http_get
return response.json()
File "C:\Users\nuttan.kumari\Anaconda3\envs\confluence\lib\site-packages\requests\models.py", line 975, in json
raise RequestsJSONDecodeError(e.msg, e.doc, e.pos)
requests.exceptions.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

Response is coming as empty for this url https://templates.atlassian.net/wiki/spaces/RD/overview