Question Editor it's a full-stack javascript app, made with MERN (MongoDB, Express, React, Node.JS) development. This app it's a matrix upload file.
Use the node package manager npm to install node_modules, from the question-editor folder, inside root folder.
npm install
Once the install process ended. run npm create, to install all dependencies from the app.
npm run install-dep
Use npm create ended, you can start the app. ##You need to have ports 3000 and 3001 open and unassigned.
npm start
If you have any doubt or bug found, send me a private message