Any idea how I can remove this?

There is a black line that extends in the direction of the players movement. It’s leftover code from an abandoned project but I can’t seem to find a reference to it anywhere in the blueprints or code

It is properly a mesh needs to be deleted, to make sure of that, display the Wireframe vie, and then start selecting stuff from the screen, and once it is highlighted, you now know in which blueprint you need to look for it.