Projectile won't follow spline

I’m trying to get a projectile to cast to a spline component on the main character and follow along it when fired.

The projectile spawns and disappears when it should, which leads me to believe it is communicating across blueprints properly but it doesn’t move at all, and I’m absolutely stumped as to why.

Here’s the blueprint I’ve got for the projectile. Does anyone have any suggestions? Or better ways to go about what I’m trying to do?