Issues with Zoom webinar Q&A report

I used Zoom to hold four webinars yesterday. I would like to generate my Q&A report today. However, I got empty result in the report. Can you please let me know how can I solve the problem?

Hey @pr11
Thanks for reaching out to the Zoom Developer Forum, I am happy to help here!
Could you please confirm what HTTP status code you are getting?
Also, could you share with me the request URL that you are sending so I can debug this issue further?