Issues with blending Saber effect

Hi, I am trying to use the Saber effect to have a basketball lit up in my video. However when I add the effect and try to blend it into the video, it doesn't work and I am stuck with a black screen. If it helps, I am trying to follow in the footsteps of this video here https://www.youtube.com/watch?v=2Du2nGokKrA&t=84s

I am attaching a photo of my project. Any help would be appreciated