Serverless invoke works but curl gives error - aws-lambda

Question

I have a serverless function, you can find the code below, and this function is deployed on aws lambda using the serverless framework. from within this function i call an external web api.
When i do serverless invoke -f my_func i get the expected response. but if i run a curl command it fails and i get {"message": "Internal server error"}
this is my curl command:
curl -X GET \
https://0wb3echzu8.execute-api.us-east-1.amazonaws.com/dev/my_func \
-H 'cache-control: no-cache' \
-H 'postman-token: 1fc551c0-7010-e1e3-7287-6a0d82d1e91a'
this is my code:
var request = require("request");
var options = { method: 'GET',
url: 'https://api.coinmarketcap.com/v2/listings/',
headers:
{ 'postman-token': '090e284e-62ad-29f0-0f10-92ae14656a37',
'cache-control': 'no-cache' } };
module.exports.my_func = (event, context, callback) => {
request(options, function (error, response, body) {
if (error) { console.log(error); callback(null, error) }
console.log(body)
callback(null, body)
});
};
this is the serverless.yml file:
service: aws-nodejs
app: sonarsic
tenant: vincent
provider:
name: aws
runtime: nodejs6.10
functions:
my_func:
handler: handler.my_func
events:
- http:
path: my_func
method: get
cors: true
It must have to do something with the calling of the web api in my function. if i don't call a web api it works fine.
If I check the logs via serverless logs -f my_func i only get the logs of the calls that worked using serverless invoke.
what can i do to find out what is going wrong inside my function when making a curl command?
adding cors:true to the http section does not solve the problem
cloudwatch is attached to aws lambda but it seems there is nothing written to:

Answer 1

After some discussion on chat, we discovered that statusCode on the response body is missing
let request = require('request');
let options = {
method: 'GET',
url: 'https://api.coinmarketcap.com/v2/listings/',
headers: {
'postman-token': '090e284e-62ad-29f0-0f10-92ae14656a37',
'cache-control': 'no-cache',
},
};
module.exports.my_func = (event, context, callback) => {
request(options, (error, response, body) => {
if (error) { console.log(error); callback(null, error) }
console.log(body)
callback(null, { body, statusCode: 200 }) // response statusCode added
});
};