Zoom LTI Pro - Error 2231

[Dizolivemint (Miles)]

API Endpoint(s) and/or Zoom API Event(s)
https://applications.zoom.us/api/v1/lti/rich/open/meeting/list

Description
I wrote a node TypeScript function that checks whether meetings tied to Moodle courses in the Zoom LTI Pro exist. The function takes a userId, which I have checked to ensure are valid Zoom user IDs. The function generates a signature that is validated correctly. In addition, the function returned success on Friday, and everything stayed the same over the weekend on my end.

Scheduling meetings via API with LTI Pro

Error?
{
status: false,
errorCode: ‘2231’,
errorMessage: ‘Something went wrong. Please refresh this page.’
}

How To Reproduce

async function getMoodleCourseMeetingList(userId: string): Promise<GetCourseMeetingListResponseModel | void> {
  const timestamp = new Date().getTime()
  const ltiKey = process.env.ZOOM_LTI_KEY
  const ltiSecret = process.env.ZOOM_LTI_SECRET
  const ltiSignature = `isUpComing=true&key=${ltiKey}&pageNum=1&pageSize=20&timestamp=${timestamp}&userId=${userId}`
  const utf8ltiSignature = CryptoJS.enc.Utf8.parse(ltiSignature)
  const hmacString = CryptoJS.HmacSHA1(utf8ltiSignature, ltiSecret)
  const ltiSignatureHash = CryptoJS.enc.Base64url.stringify(hmacString)
  
  const url = `${baseUrl}/open/meeting/list?${ltiSignature}`

  const headers = {
    'X-Lti-Signature': ltiSignatureHash
  }

  try {
    const response = await Axios({
      method: 'get',
      url,
      headers
    })
    console.log(response.data)
    return response.data
  } catch (error) {
    console.error(error)
    return
  }
}```

[Dizolivemint (Miles)]

Following up, I redid the signature so the signature result now matches the examples here:
Google App Script example
Powershell example

In addition, I had to create a new credential using LTI 1.3, for the bulk import to work. Unfortunately, the meeting list endpoint still throws the same error.

Here is the function that creates the signature:

async function generateSignature(message: string) {
  const crypto = require('crypto');
  let ltiSecret = process.env.ZOOM_LTI_SECRET;

  let hmac = crypto.createHmac('sha1', ltiSecret);
  hmac.update(message);
  let signature = hmac.digest('base64');
  signature = signature.split('=')[0].replace(/\+/g, '-').replace(/\//g, '_');
  
  return signature;
}

Here is the function that fetches the meeting list. Still getting the same error 2231:

async function getMoodleCourseMeetingList(userId: string): Promise<GetCourseMeetingListResponseModel | void> {
  const timestamp = new Date(new Date().toUTCString()).getTime()
  const ltiKey = process.env.ZOOM_LTI_KEY
  const message = `isUpComing=true&key=${ltiKey}&pageNum=1&pageSize=20&timestamp=${timestamp}&userId=${userId}`
  const ltiSignatureHash = await generateSignature(message)
  
  const url = `${baseUrl}/open/meeting/list?${message}`

  const headers = {
    'X-Lti-Signature': ltiSignatureHash
  }

  try {
    const response = await Axios({
      method: 'get',
      url,
      headers
    })
    console.log(response.data)
    return response.data
  } catch (error) {
    console.error(error)
    return
  }
}

Here is the function that adds the meetings to Moodle (Bulk import API). It is working, but adding the userId, as per the documentation, does not work:

async function associateZoomMeetingWithCourse(meetingList: ZoomLtiRequestBodyType['meetingList']): Promise<any | void> {
  // const userId = process.env.ZOOM_USER_ID // Adding the userId doesn't work for me
  const timestamp = new Date(new Date().toUTCString()).getTime()
  const ltiKey = process.env.ZOOM_LTI_KEY
  const message = `key=${ltiKey}&timestamp=${timestamp}` // &userId=${userId}` // Adding the userId doesn't work
  const ltiSignatureHash = await generateSignature(message)

  console.log('ltiSignatureHash', ltiSignatureHash)
  const url = `${baseUrl}/meeting/bulkImport?${message}`
  console.log(url)

  const headers = {
    'X-Lti-Signature': ltiSignatureHash,
    'Content-Type': 'application/json',
    'Accept-Encoding': 'gzip, deflate, br',
    'Accept': 'application/json',
  }

  if (meetingList.length > 400) throw new Error('Too many meetings to associate with course. (Max 400)')

  const data = meetingList // Adding the userId doesn't work

  try {
    const response = await Axios({
      method: 'post',
      url,
      headers,
      data
    })
    console.log(response.data)
    return response.data
  } catch (error) {
    console.error(error)
    return
  }
}