Notifications reporting with 'No Data'

Hello, I've recently setup notifications for email with our SEP server. The notifications that come in are usually not helpful and contain messages such as...

"Found 1 or more security events. Actual number of security events found was 74 in 1 minutes.
Security events included:
Compliance, Device Control, Network Threat Protection, Traffic, Packet and Application Control."

But when I look further in the email, it's a lot of pie charts with 'No data'

And sometimes it will come in with data, but I would say 80% of the time it's 'No data'.

Did I configure something incorrectly in notifications?