How to hide this error

[Ezra Epriputra]

Hi Ai Team...

I'm newbie with Ai2 Inventor..

How to hide this error?

thanks before for the answer...

[TimAI2]

You do not want to hide this error, you want to adjust your code/blocks to stop it happening!

Looks like you have an empty list you are trying to query, you probably need to put in a condition if the list is empty

[Ezra Epriputra]

Oh...oke so i need to put if condition...
Okay i got it...

But can you teach me, what is the proper if condition if the list is empty? Can you show me an example?

Thanks AI2 TEAM...

[TimAI2]

Difficult to say without seeing more of your project - blocks or aia

A good start would be a test using the if / else block and the is list empty block