Playback of Groove Agent Beat track

Hey y’all I’m somewhat new to this and NOT a sound engineer - I’ve got a project with several VST tracks along with audio and midi. Everything was fine until I reopened my project and poof no Groove Agent sound. The data is there. I also noticed that under the inspector for the Groove Agent tracks it says “no instrument”. When I try to click on Groove Agent nothing happens. I’m sure there is a simple remedy…

Birks