[Python] Using jsonify with FlaskRESTful returns me a TypeError

app = Flask(__name_))
api = Api(app)

class MyClass(Resource):
def post(self):
# Here i call a function from a separate file, which returns me a big python dict
result = my_func()

return jsonify(result), 200


This returns me the following error:

TypeError: Object of type Response is not JSON serializable
​

I tried adding:

test = jsonify(result), 200


And there is not error, so this means the endpoint return throws me an error? I do not understand, does Flask-RESTful call jsonify by default or something?

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