401 w/ blank response while using a valid access token to query records in Zoho CRM

Hi,

I'm building a background sync app for my website, so I used the API console to generate a Self Client w/ authorization code. I set the scopes to - ZohoCRM.settings.ALL based on https://www.zoho.com/crm/developer/docs/api/v7/modules-api.html?srcPlan=NewCRM.

I got access and refresh tokens without issue using that authorization code, but when I queried https://www.zohoapis.com/crm/v7/settings/modules via postman - I got a 401 with an empty body. I've generated new access tokens using the refresh token but I receive the same results.

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