Oct 2020 Schedule refresh not working

We have upgraded the Power BI report server Oct 2020 version.

We do have SSRS reports with Data driven and Email subscriptions. Both of them were not working when scheduling the  subscriptions. With Previous version (May 2020) the subscriptions are working perfectly.

Version:1.9.7627.11028 (Oct 2020)

Product version:15.0.1104.264