No PostCSS config found

I am trying to learn reactjs according to a tutorial. Meanwhile the tutorial instructs to use webpack for compiling stylesheets and JS assets. I am stuck in an error where the stylesheets cannot get compiled and throws following error while compiling the file using webpack. It displays following error :

   ERROR in ./src/stylesheets/hello.css (./node_modules/css-loader!./node_modules/postcss-loader/lib!./src/stylesheets/hello.css)
Module build failed: Error: No PostCSS Config found in: E:\developer\start\src\stylesheets
    at E:\developer\start\node_modules\postcss-load-config\index.js:51:26
    at <anonymous>
 @ ./src/stylesheets/hello.css 2:14-124
 @ ./src/lib.js
 @ ./src/index.js
 @ multi (webpack)-dev-server/client?http://localhost:4000 ./src/index.js

I have done everything according to the tutorial but somehow this error persists and couldn't solve this as I am very new to this. My webpack configuration file webpack.config.js is as follows:

    module: {
        rules: [
           {
                test: /\.css$/,
                use: [{
                    loader: "style-loader" // creates style nodes from JS strings
                }, {
                    loader: "css-loader" // translates CSS into CommonJS
                }, {
                    loader: "postcss-loader" // compiles Sass to CSS
                }]
            },
            {
                test: /\.scss$/,
                use: [{
                    loader: "style-loader" // creates style nodes from JS strings
                }, {
                    loader: "css-loader" // translates CSS into CommonJS
                }, {
                    loader: "postcss-loader" // compiles Sass to CSS
                }, {
                    loader: "sass-loader" // compiles Sass to CSS
                }]
            }
        ]
    }
};

Made a new file in the root directory named postcss.config.js and added

module.exports = {};

Found this on the following post:

https://stackoverflow.com/a/41758053/5350097