Exploded Fireballs Give Error on @E Manipulation

Summoned Ghast Fireballs using this command (not sure about other fireballs, but I'll assume the same):
/summon Fireball ~ ~-1 ~

{direction:[0.0,0.0,0.0]}

give an error when trying to manipulate them using the @e selector after they have exploded. See screeenshot for error. I tried with the /kill command. It seems to stop after a while though.