https://www.pcmag.com/news/windows-10-to-start-warning-users-of-imminent-ssd-failure
Microsoft, says this new drive health monitoring feature "is designed to detect hardware abnormalities for NVMe SSDs...
When such an abnormality is detected, a notification will appear on the desktop stating, "A storage device may be at risk of failure and requires your attention." There's also a clickable link to load up Windows 10's drive management and backup options, which also provides more detail on why Windows sent the notification.