Aha - that old trick (I see from your image that the light box has some weird Location values) - the curve and the light object MUST HAVE THE SAME ORIGIN POINT, he said in big letters so it cannot be confused.
Two ways out of this, click the Eye icon on the curve mod to turn it off, then set your 3D cursor to the origin point of the curve (Select Curve - SHIFT+S => Cursor Selected) then select light object and click “Set Origin” in LH Menu then chose 3D Cursor - then click Eye icon on the curve mod to re-activate it.
OR you can select both curve and light object - then key CTRL+A => “Location” - this sets both to have origin at 0,0,0 - either way works. When you try again, always leave the cursor at the origin of the curve, which should be the first vertex, when you create the light objects, or the other way round, i.e. curve has same origin as existing light object.
I also see you have been scaling the light boxes in Object Mode - tut tut tut - do all edits including scaling in EDIT mode. If you have scaled in Object Mode, select Object and key CTRL+A = “Rotation and Scale” this sets rotation and scale values back to 0 for rotation and 1 for scale. Not having these like this will cause all sorts of problems in animations.
BTW if you want to spin the camera - move the Track To from the camera to the “camera-mount” object - then that stays in line with the “camera-fp” object - the camera is then parented to the camera-mount and you can then spin it - hours of fun there! You cannot spin the camera is that has the Track To constraint in place.