Instead of installing and configuring Node.js and MongoDB, add a Docker file to speed up the development and deployment.

I'll create a Pull Request for it.

(node:3565839) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'password' of null
at /var/lib/pterodactyl/volumes/2d9ecc6e-52f3-4036-b806-37d90b13e84b/routes/admin.js:50:22
at process._tickCallback (internal/process/next_tick.js:68:7)
(node:3565839) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:3565839) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
^C

To send emails always make use of 3rd party APIs
Try mailgun or SendGrid for this purpose
Don't let ur api key to be commited here
you can add your secrets in config file when working locally and add that in .gitignore for safe handling
use git status to check for what's going to be commited on complete add (a common mistake that does happen)

Is this a fully functional, production ready app , or a learning project ?
What is the current limitation, issues ?

@Defcon27 When I try to run it on VS Code, the flashcards rather u can say the cars and their details are not visible. Only the navbar with price, range,etc options is being shown. Not able to fix it. Tried my best. Can ya plz help out?