Mob Platform not spawning any mobs

[Elobster]

So i made a mob platform like in the thread "How to play Skyblock Dream & Fantasy" by Flagy_
and It seems that It's not spawning mob
why is that

 

[Yanique1]

There can’t be any light it needs to be full blocks not slabs

 

[vortex91]

There can’t be any light it needs to be full blocks not slabs

^^

 

[Yanique1]

^^

Dude stop farming messages, there was only one reply on this post what was doing “^^” supposed to do. Did you think they couldn’t see the one reply I made but rather only yours?

 

[vortex91]

Dude stop farming messages, there was only one reply on this post what was doing “^^” supposed to do. Did you think they couldn’t see the one reply I made but rather only yours?

This ^^ is me saying that I agree with this reply or statement that I quoted

 

[Yanique1]

This ^^ is me saying that u agree with this reply or statement that I quoted

Again not needed as you can react to the message. I think this is why you have over 1000 messages. Anyways this thread should be locked.

 

[zethfull]

Solved by Yanique1

~Thread locked~