can't sync with caldav

can't sync with caldav

Hello

I'm trying to sync with caldav. Using the endpoint: https://calendar.zoho.com/caldav, I can get the principal.
Then when I try to get calendar-home-set from the principal, the reply is empty.

I'm sending the following PROPFIND request to: https://calendar.zoho.com/caldav/67.....a3/user
  1. <propfind xmlns="DAV:">
  2.    <prop>
  3.      <calendar-home-set xmlns="urn:ietf:params:xml:ns:caldav"/>
  4.    </prop>
  5. </propfind>

The reply is successful but empty:
  1. <D:multistatus xmlns:D="DAV:"/>