Flask's request.form returning None for all attributes with multipart/form-data request [duplicate]

I am trying to get data from my react front end submitted as multipart form data into flask. However, every time I try to print data to the console, it comes up as "None;" I've tried printing the entire request.form and it's an empty ImmutableMultiDict.

So far I've tried

• Setting a content type header on the axios request stating it is multipart/form-data
• Making sure the user object is populated/not falsey in the first place
• Ensuring all fields have a name attached to them
• Switching from React Bootstrap to basic html forms and inputs (made no difference)

Any ideas on what's wrong, or where to go from here, are much appreciated.

//FLASK CHECK    @app.route('/user/sign_up', methods=['GET', 'POST'])  def api_sign_up():      try:          if request.method == 'POST':              data = request.form              print(data.get('username'))   )              return "success"      except Exception as e:          print(e)          return str(e)    //CONSOLIDATED REACT HANDLESUBMIT FUNCTION    const handleSubmit = (e) => {      const user = {        email: email,        full_name: full_name,        username: username,        password: password,        biography: biography,        roles: role,        profile_picture: profile_picture,        availability: dates.map((date) => {          return date.getMonth() + 1 + "/" + date.getDate() + "/" + date.getFullYear();        }),        us_phone_number: us_phone_number      }          setSubmitted(true);      axios_instance.post('SIGN_UP_ROUTE', user)        .then(function (response) {          console.log(response);        })        .catch(function (error) {          console.log(error);        });    }```  

https://stackoverflow.com/questions/66467776/flasks-request-form-returning-none-for-all-attributes-with-multipart-form-data March 04, 2021 at 10:34AM