bingads.exceptions.OAuthTokenRequestException Error while generating performance report.

I am trying to generate a performance report from Microsoft Ads through an API call. I am following Microsoft Learn Authentication with OAuth documentation. I have created an app, requested the user consent, and got the access and refresh token successfully. But when I tried to get to the performance report, I am getting "bingads.exceptions.OAuthTokenRequestException Error"

I have used the python code to generate reports from Python code to request and download Microsoft Advertising report using Microsoft Advertising API