Displaying tree using Jetpack Compose

[EliasVarelaSerroukh]

I am using Stanford's parser in Android Studio. I want to display a parsed sentence in the form of a tree using Jetpack Compose and I have created two classes that serve this purpose.
Firstly I have the Tree.kt class, which creates and loads the display of the tree.

Then, there's the SecondScreen class, in which the input is created and parsed


The problem I have at the moment is that when I press the button to parse the sentence, It's loading for about 3 seconds and then crashes. I would like to know why the display isn't working. It would be really helpful if someone answered.