Python requests - JSONDecodeError("Expecting value", s, err.value) from None - json

Question

I'm trying to grab a response from an api but i cannot load it in a dictionary.
Here's my code:
r = session.post(url, headers=headers, json=payload)
The returned status code is 200 so i get a response.
By trying to do: reply = r.json() i get:
Traceback (most recent call last):
File "C:/Users/PycharmProjects/honeymonitor/main.py", line 46, in <module>
data = get_data(session)
File "C:/Users/PycharmProjects/honeymonitor/main.py", line 35, in get_data
reply = r.json()
File "C:\Users\PycharmProjects\honeymonitor\venv\lib\site-packages\requests\models.py", line 897, in json
return complexjson.loads(self.text, **kwargs)
File "C:\Users\AppData\Local\Programs\Python\Python37\lib\json\__init__.py", line 348, in loads
return _default_decoder.decode(s)
File "C:\Users\AppData\Local\Programs\Python\Python37\lib\json\decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "C:\Users\AppData\Local\Programs\Python\Python37\lib\json\decoder.py", line 355, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
And by using reply = r.text i get a lot of gibberish:
� d�M���)b�b��$�j�np������X2�Al�w{g��wO�n-���w��g�����}�1�Y5#�R��/�
� X���o]>6,�N�_#�#Ң����K�#���s
��Ɩ�ː�����2��N�:D��p�����7{K��������V��
-")�p0n#I�f!���Q�+| /We�.�p�=����u���-�ʌ�cs�"jfH����}qkː��q�,q�bږq�ٟ��Z���>��U#�����ET�V/��+cU����ʁ�LLe��(���V�2���å}�UC���#�8y��B�7Λ��c���Y?��q��TOMTv{����ߎ������,�[�|��wf_�˰�g������?
The content type in the headers of the post request is:
'Content-Type': 'application/json;charset=UTF-8',
Also by checking the r.encoding i get None
At the end i've tried json.loads(r.text) but i get the same error.
Also tried encoding the response with r.content.decode('utf-8')
and got UnicodeDecodeError: 'utf-8' codec can't decode byte 0xd5 in position 1: invalid continuation byte
What i'm doing wrong?
EDIT:
I've tried replicating the request with Fiddler and i can clearly see the response json there
I've compared the response headers between Fiddler and requests, the only difference is that with requests i ge 'Transfer-Encoding': 'chunked' in the headers
EDIT2:
Here's a portion of the r.content:
b'\x03\xd5\x01\x00d\xca9\x9cvwC\x7f \x1b]j\xfb\xc5\xa3tA\xa1k.N9\x01\x08\x03\r\xcc\x02i\x01\xb7\x0b\xc2=\xc6\x92\xb1\rb\xe3\xbf\xdb;\x83\xb7\xbf{\xe2vk\xd1\xed\xef\xbf[d<{.n\x7fo\xd5WC\xab\x84\xeb\xecN\xd3#\xcc\xed\x0cAks\xa5\xe6\x87?\x15\xb3:\x8d\xfdS}\xb5O\x9a\xb8\x9d\xddK\x98\xf5+HSLq\x14\x84\xab:Fd!\xa8\xc0\x0c\xd2\xd3\x0eL\xd4\xec\x9b\xcb\xf2\xcf\xae\x18\xd9\x15&fg\xbf\xd6.```

Answer 1

There can be a couple of reasons for this error
I faced the same error. In my case, I am calling a put URL. In your case, it is post
I implemented my put API in such a way that, it won't return anything except status code. So after receiving the Response body contains no data. And we are trying to parse that to JSON. But actually nothing is there to parse.