Python Flask AttributeError: 'Request' object has no attribute 'is_xhr'

#. Remove flask and install recent version

    pip uninstall flask
    pip intall flask


#. Else, go to your requirements.txt remove the verions of your plugins/libraries.
   ex: flask=0.12.0
          to
         flask


Re run the requriements.txt and make sure all it is now in updated version.
#before uninstall manually and run the below command.

pip install -r requirements.txt

NodeJS - Request Plugin for file attachment MULTIPART/FORM-DATA

package.json

{
  "name": "sample",
  "version": "1.0.0",
  "description": "",
  "main": "apicall.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "dependencies": { 
    "request": "^2.83.0" 
  }
}

apicall.js

var fs = require("fs");

var request = require("request");

var fs = require('fs');

var request = require('request');

request.post({

    url: 'https://url/upload',

    formData: {

keyName1: 'value1',

                keyName2: 'value2',               

               file: fs.createReadStream('d:/temp/30off.jpg')

    },

}, function(error, response, body) {

    console.log(body);

});

steps

npm install
node apicall.js