I run main.py after setting json and it returns this error:

pygame 2.0.0 (SDL 2.0.12, python 3.8.5)
Hello from the pygame community. https://www.pygame.org/contribute.html
Traceback (most recent call last):
File "main.py", line 65, in
checking_price()
File "main.py", line 32, in checking_price
page = requests.get(URL, headers=headers)
File "/usr/lib/python3/dist-packages/requests/api.py", line 75, in get
return request('get', url, params=params, **kwargs)
File "/usr/lib/python3/dist-packages/requests/api.py", line 60, in request
return session.request(method=method, url=url, **kwargs)
File "/usr/lib/python3/dist-packages/requests/sessions.py", line 519, in request
prep = self.prepare_request(req)
File "/usr/lib/python3/dist-packages/requests/sessions.py", line 452, in prepare_request
p.prepare(
File "/usr/lib/python3/dist-packages/requests/models.py", line 314, in prepare
self.prepare_headers(headers)
File "/usr/lib/python3/dist-packages/requests/models.py", line 446, in prepare_headers
for header in headers.items():
AttributeError: 'set' object has no attribute 'items'

Title says it, add colored into the requirements

product_price = soup.find('span', id='priceblock_ourprice').text.split()
AttributeError: 'NoneType' object has no attribute 'text'
The error is showing while running the program.