Error "Unable to load DLL 'vjsnativ': The specified module could not be found." after converting application t

like below fixes the issue In all other pipeline steps you're using return next.cancel(new Redirect()), it should be the same case, as the pipeline step expects a Next as a return value, but you return a Redirect here.
Try changing it to

return next.cancel(new Redirect('login'));

To fix this issue By default, create-react-app will create a progressive web app, as documented here. The progressive web app relies on registerServiceWorker() in the registerServiceWorker.js file. You have apparently deleted this file, so your project no longer builds.
You have two choices:

import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import App from './App';
// Deleted -- import registerServiceWorker from './registerServiceWorker';

ReactDOM.render(<App />, document.getElementById('root'));
// Deleted -- registerServiceWorker();

To fix the issue you can do I too faced this issue. the problem was when wordcloud is installed it gets python modules and stores in **C:\Python27\Lib\site-packages** folder (in my case this is the python executable path this may vary for you) so when you import from jupyter it tries to find it in this path , but wordcloud creates one more folder with same name and downloads all wordcloud module in side this , this is one more level in directory so jupyter is unable to find. so the hack what i did is copied all modules from inner wordclod folder to one level outside i.e

Any of those help Add your DLL location of python (C:\Program Files\Python35\DLLs) in Environment variables of Path.