Improve error management

[brendanreardon]

The initial version of this repository had some error handling

@flask.current_app.route('/about', methods=['GET'])
def get_about():
    session = models.Session()
    try:
        about = session.query(models.About).filter_by(id=0).first()
        if about:
            data = about.__dict__
            data.pop('_sa_instance_state', None)
            return create_response(
                data=[data],
                message="About metadata retrieved successfully",
                status=200
            )
        else:
            return create_response(
                data={},
                message="No database metadata found",
                status=404
            )
    except Exception as e:
        print(f"Error occurred: {e}")
        return create_response(
            data={"error": {e}},
            message="An error occurred while retrieving about metadata",
            status=500
        )
    finally:
        session.close()