Having an issue in Playgrounds - Object is not appearing

Greetings,

I'm just learning Swift language by Playgrounds and some Udemy educations.

I have a problem with Coding 2 - Connect and Solve episode.

I supposed to build 3 - 2 - 3 blocks to three spots on 2nd column BUT blocks are acting like ghosting, it appears like for 0.5 seconds and disappear again.

Then only change that I made is updating MacOS system with the lastest patch.

Open to any ideas about the issue.

Tnank you!

The* Latest*

Nothing is wrong. I'm sorry, I'm a noob with this mistake:

let block = Block()

world.place(block, atColumn: i*2, row: 2)

instead of writing it as;

world.place(**Block(),** atColumn: i*2, row: 2)

I still don't know what's my main mistake (I mean the rule I didn't do right) but I'm gonna learn it tho.

Thanks to 98 viewers anyways.

Having an issue in Playgrounds - Object is not appearing
 
 
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