Hello, I was trying to use the Smart API to fetch historical and market data. Yesterday, it was working, but suddenly, whenever I try to access market data or historical data from the api.

It is showing, Invalid Api Key. "errorCode": "AG8004"

Note: I have put the SECRET key of the created app as X-PrivateKey and I kept the header as mentioned in the documentation, but it is still failing.

Please note that it was working initially, but it has suddenly stopped working as of today. I regenerated new api keys a few times and used them, but they are still not working, same Invalid API key error. I'm attaching a screenshot.