Https://api.upstox.com/v2/portfolio/short-term-positions - Suddenly returning 0

The API was working fine https://api.upstox.com/v2/portfolio/short-term-positions
But after a while it started returning no data.
I checked manually the short term positions do exist in the account.
The return status code is 200 which is success.

@GURMEET_1305014 Could you please share your 6-digit UCC and confirm the time period during which you received an empty response?