Might be too much light. Cuttings need very little light. All i do is cut them and then into collars and netpots.
Think about it. Light is for growing but without roots the plant will kill itself trying to veg. It needs a low stress environment so it will grow roots, then give it the light so it can veg and be able to uptake nutes. A small 13w cfl is more than enough for.cloning.