String search on GitHub organization

github_string_search.py

from requests import get
from sys import argv, exit
from os import environ
from requests.models import HTTPBasicAuth


def main():
    if len(argv) < 3:
        print('invalid input, expected arguments: `python3.9 script.py <account-name> <search-string>`')
        exit(1)

    combined = '+'.join(argv[2:])
    response = get(
        f"https://api.github.com/search/code?q={combined}+in:file+org:{argv[1]}",
        headers={'Content-Type': 'application/json'},
        auth=HTTPBasicAuth(environ['GITHUB_USERNAME'], environ['GITHUB_TOKEN']))

    if response.status_code != 200:
        raise Exception('error quering an api')

    if len(response.json()['items']) == 0:
        return ('not found', 'not found')

    x = len(response.json()['items'])
    print(f'found {x} affected repositories')

    for item in response.json()['items']:
        name = item['repository']['name']
        file = item['path']
        print(f'repo {name}, file {file}')


if __name__ == "__main__":
    main()

im getting below error.how to resolve.
C:\Users\ilraju0\Desktop>py github_search_string.py test-org sonar
Github user name is: ilraju0
200
<Response [200]>
Traceback (most recent call last):
File "C:\Users\ilraju0\Desktop\github_search_string.py", line 38, in
main()
File "C:\Users\ilraju0\Desktop\github_search_string.py", line 25, in main
if len(response.json()['items']) == 0:
File "C:\Users\ilraju0\AppData\Local\Programs\Python\Python39\lib\site-packages\requests\models.py", line 910, in json
return complexjson.loads(self.text, **kwargs)
File "C:\Users\ilraju0\AppData\Local\Programs\Python\Python39\lib\json_init_.py", line 346, in loads
return _default_decoder.decode(s)
File "C:\Users\ilraju0\AppData\Local\Programs\Python\Python39\lib\json\decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "C:\Users\ilraju0\AppData\Local\Programs\Python\Python39\lib\json\decoder.py", line 355, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 6 column 1 (char 5)