Stress History under Training Readiness not enough data

Hello,

I noticed over the weekend, my Stress History in Training Readiness no longer display data. It says not enough data. It suddenly stopped working. When you click on the widget, it works fine and displays data. I don't think there was an update that caused this issue. I have been wearing the watch consistently over the past six months so I can't figure out why it says not enough data.

Any help would be greatly appreciated! Tried restarting the watch - no luck

I am on software version 10.44

Thanks!