BUG: Fix ReferenceError in index.js file

[rugved0102]

Is there an existing issue for this?

• [X] I have searched the existing issues

What happened?

There is currently a ReferenceError occurring in the index.js file of the backend. The error message indicates that the port variable is not defined. This issue needs to be addressed to ensure that the backend server runs without errors.

Steps to Reproduce:

Clone the repository.

1. Navigate to the backend directory.
2. Run node index.js to start the backend server.

Expected Behavior: The backend server should start without errors and should print the message "Server is running on port {port}" to indicate that it is listening on the specified port.

Actual Behavior: The following error occurs:

Proposed Solution: Define the port variable with an appropriate value before using it in the app.listen() function in the index.js file.

Record

• [X] I agree to follow this project's Code of Conduct
• [X] I have checked the existing issues
• [X] I'm a GSSOC'24 contributor
• [X] I want to work on this issue

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[Satyam1923]

so what's actually wrong in the code can you explain.