Getting error when sending large file to flask - json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

[martinenkoEduard]

i am getting error json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
When sending 16mb file to flask

@app.route("/detectAndSaveAllFaces", methods=["POST"])
def upload_file():
    if request.method == "POST":
        if "file1" not in request.files:
            return "there is no file1 in form!"
        file1 = request.files["file1"]
        data = request.files['file1'].read()                
        filemd5 = hashlib.md5(file1.read()).hexdigest() 
        filesha1 = hashlib.sha1(file1.read()).hexdigest()  
        response = detection.detect(data)
        print(response)

Traceback (most recent call last):
  File "/home/administrator/anaconda3/lib/python3.9/site-packages/flask/app.py", line 2095, in __call__
    return self.wsgi_app(environ, start_response)
  File "/home/administrator/anaconda3/lib/python3.9/site-packages/flask/app.py", line 2080, in wsgi_app
    response = self.handle_exception(e)
  File "/home/administrator/anaconda3/lib/python3.9/site-packages/flask/app.py", line 2077, in wsgi_app
    response = self.full_dispatch_request()
  File "/home/administrator/anaconda3/lib/python3.9/site-packages/flask/app.py", line 1525, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/home/administrator/anaconda3/lib/python3.9/site-packages/flask/app.py", line 1523, in full_dispatch_request
    rv = self.dispatch_request()
  File "/home/administrator/anaconda3/lib/python3.9/site-packages/flask/app.py", line 1509, in dispatch_request
    return self.ensure_sync(self.view_functions[rule.endpoint])(**req.view_args)
  File "/home/administrator/code/flask/SQLAlchemy_example.py", line 90, in upload_file
    response = detection.detect(data)
  File "/home/administrator/anaconda3/lib/python3.9/site-packages/compreface/service/detection_service.py", line 55, in detect
    return self.detect_face_from_image.execute(request, pass_dict(
  File "/home/administrator/anaconda3/lib/python3.9/site-packages/compreface/use_cases/detect_face_from_image.py", line 37, in execute
    result: dict = self.detect_face_from_image.post(
  File "/home/administrator/anaconda3/lib/python3.9/site-packages/compreface/client/detect_face_from_image.py", line 63, in post
    return result.json()
  File "/home/administrator/anaconda3/lib/python3.9/site-packages/requests/models.py", line 910, in json
    return complexjson.loads(self.text, **kwargs)
  File "/home/administrator/anaconda3/lib/python3.9/json/__init__.py", line 346, in loads
    return _default_decoder.decode(s)
  File "/home/administrator/anaconda3/lib/python3.9/json/decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/home/administrator/anaconda3/lib/python3.9/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)

[martinenkoEduard]

I am sending a file using

import requests
url = "http://192.168.56.101:5000/detectAndSaveAllFaces"

# files = {'file1': open('trump.jpg','rb')}
#files = {"file1": open("CentOS-7-x86_64-DVD-2009.torrent","rb")}
files = {"file1": open("BvSshClient-Inst.exe","rb")}
values = {'DB': 'photcat', 'OUT': 'csv', 'SHORT': 'short'}
r = requests.post(url, files=files, data=values)
#print(r.content)u

[ThiefMaster]

Look at the traceback. Your error comes from inside compreface when it seems to make a network request to something.

PS: Your flask view function needs to return something or it'll fail - but that's unrelated to your error.