to run this app locally you need to install and run an npm-server.
copy all files into a folder. then open the console, navigate to that folder and write the following code
npm install http-server -g
after the server has been installed in the directory you have to start it
http-server"
in the console is shown under which link you can find the local client. for excample 127.0.0.1:8080 start the "index.html" file from here. Not the "index2.html" file
to run this app on your server, just copy all files to your server storage and run the index2.html file