Why do I get 404 when running Flask app on 0.0.0.0
问题 I am testing my Flask app on AWS EC2 instance (Ubuntu). Main app: from sonip.api.factory import create_app app = create_app() def main(): app.run(debug=True, threaded=True) if __name__ == "__main__": main() The actual set up of the Flask app is done in a factory including registering blueprint , etc. def create_app(): app = Flask(__name__) app.config['SERVER_NAME'] = settings.FLASK_SERVER_NAME app.config['SWAGGER_UI_DOC_EXPANSION'] = settings.RESTPLUS_SWAGGER_UI_DOC_EXPANSION app.config[