I have tried to create a extension in AL code and when I was trying to publish it was asking to download the symbols but I was unable to download the symbols. So I have gone through with the app.jason file and found that below value
Once I change the value from 12 → 10 I was able to download the symbols.
So I would like to know that is it a bug or do I need to change something in my setting while installation of VS code. Any help / suggestion .