Error message if username is not registered

[ayush0801]

If a username entered in the Login Page is not registered, give an error message that this username does not exist

[TAsUjxnMIL]

Hello ayush0801, your project seems to be interesting. I'd like to contribute to it by solving this issue. Could you give me a try and assign me to this issue?

[TAsUjxnMIL]

Hello, I am working on a Mac. MongoDb is running in the background. When starting the server with npm start I get an authentication error. What might be the problem? I do not understand the fourth point in the Getting Started section.
->Clarified!

[TAsUjxnMIL]

I've successfully started the server. I also get the message "Database connected successfully". Therefore, I used my own connection string and saved it to a variable in the .env file. I hope this is fine so far.
But there is a new problem, when trying to access to localhost with the defined port (which is 8000, the server runs on this port) I get the message "Cannot GET /". Is there still something which has to be done?