cloud function returning socket error

index.js

const functions = require('firebase-functions');
// Import Admin SDK
var admin = require("firebase-admin");
var reqprom = require('request-promise');

admin.initializeApp(functions.config().firebase);

exports.minutely_tick =
  functions.pubsub.topic('minutely-tick').onPublish((event) => {
    console.log('This job runs every 5 minutes!');
    getAllData()
      .then((dataArray) => {
        const ref = admin.database().ref(`myData/`);
        ref.set(dataArray);
        return console.log('dataArray length:', dataArray.length);
      })
      .catch((error) => {
        return console.log('Caught error: ', error);
      });
  });

function getAllData() {
  return new Promise((resolve, reject) => {

    var promises = [];
    var startInt = 0;
    for (i = 0; i < 1000; i++) {
      const options = {
        method: GET,
        uri: myUrlString,
        json: true
      }
      promises.push(reqprom(options));
      startInt += 100;
    }

    Promise.all(promises)
      .then((dict) => {
        var array = valuesFromDict(dict);
        return resolve(array);
      })
      .catch((error) => {
        return reject(error);
      });
  });

}

function valuesFromDict(dict) {
  var values = Object.keys(dict).map((key) => {
    return dict[key];
  });
  return values;
}