How to solve Runtime Error

What is meaning of this photo,How can I solve this problem.

The error tells you exactly the problem. You are trying to get first item from an empty list. Use Do it to debug your blocks.

Thankyou.What about this? How can I solve this problem?

Check all blocks that use select list item list ..index ..Check your lists , for example if you use a database such as firebase or tinyDB maybe you don't get get values . As I said connect companion and use Do it to find which precedure causes the problem


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(Canned Reply: ABG- Export & Upload .aia)
Export your .aia file and upload it here.

So the upstream question is

Why is my list empty?

  • You asked for the data from something slow (file, web,...) but expected it to appear immediately

  • You are running your app for the first time, and did not consider that you need to load some data into it

  • You asked for data from BlueTooth but did not get any data yet

  • what did I miss?