const axios = require('axios'); 
 
async function callApi() {
    return axios.get('http://localhost:8800/api/PING.PING?noblock');
}
 // add jsreport hook which modifies the report input data
async function beforeRender(req, res) {
    const r = await callApi();
    console.log("ret is ",r.data)
    req.data = { ...req.data, ...r.data}
}

while if I change it to a login API with post method:

const axios = require('axios'); 
 
async function callApi() { 
    return axios.post('http://localhost:8800/api/REST_ACCOUNT.LOGIN',{
          Usercode:"000000",
          Codice_Concessione:"GG",
          Browser:"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.121 Safari/537.36",
           Password:"xxxxxxxxxx",
           Lingua:"POR"
         }
    ); 
}

i get this error

2020-09-30T14:35:07.392Z - debug: Executing script prova-script.js using http-server strategy
2020-09-30T14:35:09.941Z - warn: Rendering request 1 finished with error in 2554 ms
2020-09-30T14:35:09.941Z - warn: Error when processing render request 1 Parse Error Error: Parse Error
    at Socket.socketOnData (_http_client.js:442:20)
    at Socket.emit (events.js:198:13)
    at Socket.EventEmitter.emit (domain.js:466:23)
    at addChunk (_stream_readable.js:288:12)
    at readableAddChunk (_stream_readable.js:269:11)
    at Socket.Readable.push (_stream_readable.js:224:10)
    at TCP.onStreamRead (internal/stream_base_commons.js:94:17)
2020-09-30T14:35:09.942Z - warn: Error during processing request at h

I've tested calling the latter API on a browser page with the same Axios code and the params are correct.
The only unusual things in this API are:

• return data is a 9K json
• response headers are pretty big, around 12K because of the JWT token

Any ideas?
Thanks

NODE_OPTIONS=--max-http-header-size=16384 jsreport start

this is the original post [https://github.com/postmanlabs/postman-app-support/issues/8656]