Can't use filters on "Get Segment Profiles"

I’m having an issue with the Get Segment Profiles API endpoint.

I’m getting the following error: "'equals' is not an allowed filter operator for email." however it says in the API docs that it is allowed?

I should also note that I use this exact setup for the ‘https://a.klaviyo.com/api/profiles/’ endpoint where the filter works fine.

How would i go about appending a filter where the request only returns a profile with a specific email if I can’t use the “equals” filter on emails?

  const options = {
    method: 'GET',
    headers: {
      accept: 'application/json',
      revision: '2023-02-22',
      Authorization: `Klaviyo-API-Key ${process.env.KLAVIYO_PRIVATE_KEY}`
    }
  };

  const params = new URLSearchParams({
    'filter': `equals(email,"KNOWN_EMAIL_ADDRESS")`
  });

  const segmentID = 'SEGMENT_ID';

  const segmentURL = `https://a.klaviyo.com/api/segments/${segmentID}/profiles/?${params}`

  const { data: klaviyoSegment } = await fetch(segmentURL, options)
  .then(res => res.json())
  .catch(error => console.error(error))