A Scriptable widget which shuffles a random Simpsons episode and plays it on Disney+ upon interaction

simpsonsWidget.js

let openWith = args.widgetParameter
let widget = new ListWidget()
widget.setPadding(8, 10, 5, 10)
widget.backgroundColor = new Color("#111E6C")

await loadImage()
await getRandomEpisode()

Script.setWidget(widget)
Script.complete()
widget.presentLarge()

async function getRandomEpisode() {
  // load json from iCloud Drive
  let fm = FileManager.iCloud()
  let dir = fm.documentsDirectory()
  let path = fm.joinPath(dir, "simpsons.json")
  let contents = Data.fromFile(path)
  let episodes = JSON.parse(contents.toRawString())
  
  var episodeList = []; 
  for(var i in episodes) 
    episodeList.push(episodes[i]);
    
  let randomNumber = getRandomNumber(1, episodeList.length)
  let chosenItem = episodeList[randomNumber-1]
  let title = chosenItem.title
  let season = chosenItem.seasonNumber
  let episode = chosenItem.episodeNumber
  widget.url = chosenItem.url

  let titleText = widget.addText(title)
  titleText.textColor = Color.white()
  titleText.font = new Font("AvenirNext-DemiBold", 13)
  titleText.lineLimit = 2
  titleText.leftAlignText()
  widget.addSpacer(2)
    
  await loadMetadata(season, episode)
}

async function loadMetadata(season, episode) {
  let tvMazeUrl = "http://api.tvmaze.com/shows/83/episodebynumber?season=" + season + "&number=" + episode
  let tvMazeRequest = new Request(tvMazeUrl)
  let tvMazeResponse = await tvMazeRequest.loadJSON()
  
  let excerptText = widget.addText(tvMazeResponse.summary.replace(/<\/?[^>]+(>|$)/g, ""))
  excerptText.textColor = Color.lightGray()
  excerptText.font = new Font("AvenirNext-Medium", 13)
  excerptText.lineLimit = 4
  excerptText.leftAlignText()
  widget.addSpacer(4)
  
  let airDate = new Date(Date.parse(tvMazeResponse.airstamp))
  let df = new DateFormatter()
  df.useMediumDateStyle()
  df.useNoTimeStyle()
  let strDate = df.string(airDate)
  let seasonEpiside = "S" + add_zero(season, 2) + "E" + add_zero(episode, 2)
  let dateAddedText = widget.addText("📺 " + seasonEpiside+"   📅 " + strDate)
  dateAddedText.textColor = Color.white()
  dateAddedText.font = new Font("AvenirNext-DemiBold", 11)
  dateAddedText.leftAlignText()
}

// helper function to download an image
async function loadImage() {
  let req = new Request("https://assets.foxdcg.com/dpp-uploaded/images/the-simpsons/the-simpsons_30/logo-tab.png")
  let image = await req.loadImage()
  let widgetImage = widget.addImage(image)
  widgetImage.imageSize = new Size(65,25)
  widgetImage.rightAlignImage()
}

// random number, min and max included 
function getRandomNumber(min, max) {
    return Math.floor(Math.random() * (max - min + 1) + min)
}

// add leading zeros to a number
function add_zero(number, length) {
  var num = '' + number;
  while (num.length < length) {
    num = '0' + num;
  }
  return num;
}

Zudem bekomme ich auf meinem iPad mini 4 mit iOS 14 eine Fehlermeldung, sofern ich das entsprechende Widget erstellen möchte:
Error on line 19:37: TypeError: null is not an object (evaluating 'contents.toRawString')

Wie kann ich den Fehler beheben? Auf meinem iPhone läuft das Widget wunderbar!

Um Hilfe bin ich sehr dankbar!

How did you make the json? What method to pull all that data? I want to make a similar widget but for Rick and Morty.