Chainlink External Adapter with RapidAPI [Request failed with 500 Internal Server Error]

Question

I followed chainlink tutorial to build an external adapter. Unfortunately, after hours of debugging, my EA is still not working, flashing the 500 internal server error.

HTTP/1.1 500 Internal Server Error
X-Powered-By: Express
Content-Type: application/json; charset=utf-8
Content-Length: 186
ETag: W/"ba-z+FLILUhYUEw92/8nbj21rBflVg"
Date: Wed, 11 May 2022 05:05:45 GMT
Connection: close

{
  "jobRunID": 0,
  "status": "errored",
  "error": {
    "error": {
      "name": "AdapterError",
      "message": {
        "error": {
          "name": "AdapterError",
          "message": "Required parameter not supplied: base"
        }
      }
    }
  },
  "statusCode": 500
}

The API I am trying to fetch is AeroDataBox API (from RapidAPI marketplace). We need 2 params: flight number (AC1309) and date (2022-05-09).

This is the RapidAPI code snippet recommendation:

const fetch = require('node-fetch');

const url = 'https://aerodatabox.p.rapidapi.com/flights/number/AC1039/2022-05-09';

const options = {
  method: 'GET',
  headers: {
    'X-RapidAPI-Host': 'aerodatabox.p.rapidapi.com',
    'X-RapidAPI-Key': 'db0eaaf009msh506491d3d299ed8p10a8d4jsnc705a04d3eb2'
  }
};

fetch(url, options)
    .then(res => res.json())
    .then(json => console.log(json))
    .catch(err => console.error('error:' + err));

This is the snippet of my code in the index.js:

const customParams = {
  flightNumber: ['flightNumber'],
  date: ['yyyy-mm-dd'],
  endpoint: false
}

const createRequest = (input, callback) => {
  const validator = new Validator(callback, input, customParams)
  const jobRunID = validator.validated.id
  const API_KEY = process.env.API_KEY
  const flightNumber = validator.validated.data.flightNumber
  const date = validator.validated.data.date
  const url = `https://aerodatabox.p.rapidapi.com/flights/number/${flightNumber}/${date}`
 
  const params = {
    flightNumber,
    date
  }

  const headers = {
    'X-RapidAPI-Host': 'aerodatabox.p.rapidapi.com',
    'X-RapidAPI-Key': `${API_KEY}`
  }
 }

  const config = {
    url,
    params,
    headers
  }


  Requester.request(config, customError)
    .then(response => {
      callback(response.status, Requester.success(jobRunID, response.data))
    })
    .catch(error => {
      callback(500, Requester.errored(jobRunID, error))
    })

This is my curl command:

curl -X POST -H "content-type:application/json" "http://localhost:8080/" --data '{ "id": 0, "data": { "flightNumber": "AC1309", "date": "2022-05-09" } }'

I don't know what I am missing? Thank you for your help.