Flask app returning 500 Internal Server scenarios on POST request with JSON payload - ValueError: Expecting value: line 1 column 1 (char 0)
I'm learning this framework and I'm building a feature where I am experiencing a persistent scenario with my Flask application where sending a POST request with a JSON payload results in a 500 Internal Server behavior. The behavior traceback in my console shows `ValueError: Expecting value: line 1 column 1 (char 0)`. I am using Flask version 2.1.0 and have the following route set up to handle the incoming JSON data: ```python from flask import Flask, request, jsonify app = Flask(__name__) @app.route('/api/data', methods=['POST']) def handle_data(): data = request.get_json() if data is None: return jsonify({'behavior': 'Invalid JSON'}), 400 return jsonify({'message': 'Data received', 'data': data}), 200 ``` When I send a POST request using Postman with the following JSON payload: ```json { "name": "John Doe", "age": 30 } ``` I receive the aforementioned behavior. I have tried logging the incoming request data by adding a print statement before calling `request.get_json()`, but nothing is printed when the behavior occurs. I also verified that the Content-Type header in the request is set to `application/json`. Additionally, I tested sending a POST request with an empty body and received the same behavior, which makes me suspect there might be an scenario with how Flask is parsing the request body. My Flask app is running in development mode, and I have ensured that the Flask server is up-to-date. I would appreciate any guidance on how to resolve this scenario, as it seems to be an unexpected behavior with JSON parsing in Flask. I'm using Python latest in this project.