Sweep: Fix unexpected string

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PR Feedback: 👍

Description

This pull request addresses a syntax error in the app.js file where the express module was incorrectly required, potentially causing the application to fail at runtime.

Summary

• Fixed a syntax error in the require statement for the express module in app.js.
• Ensured that express is correctly initialized to prevent runtime errors.

Fixes #18.

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Rollback Files For Sweep

• [ ] Rollback changes to app.js

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Apply Sweep Rules to your PR?

• [ ] Apply: All docstrings and comments should be up to date.
• [ ] Apply: All new business logic should have corresponding unit tests.
• [ ] Apply: Refactor large functions to be more modular.
• [ ] Apply: Add docstrings to all functions and file headers.

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