Add global Flask error handlers for 404 and 500 responses

[Aaravanand00]

Summary

Currently, some routes handle errors locally using try/except blocks, while others rely on default Flask error behavior.

Introducing global error handlers for common errors (e.g., 404 and 500) would centralize error handling and make responses more consistent.

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Proposed Improvement

Use Flask's @app.errorhandler() to define global handlers for:

• 404 (Not Found)
• 500 (Internal Server Error)

Example:

@app.errorhandler(404)
def handle_404(error):
    return jsonify({
        "success": False,
        "message": "Resource not found",
        "data": None,
        "error": str(error)
    }), 404

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Benefits

• Cleaner route code (less repetition)

• More consistent API error responses

• Easier future logging and monitoring integration