Summon SmallFireball not working

Summon SmallFireball not working

what i expected to happen:
when summon a SmallFireball a SmallFireball should be summoned
/summon SmallFireball ~ ~ ~

{direction:[0.0,0.0,1.0]}

what really happened
the output said object summoned successfully but no fireball appeared

steps to reproduce
1. type /summon SmallFireball ~ ~ ~

{direction:[0.0,0.0,1.0]}

2. read the chat output
3. look for the fireball