Error printing out the null message to screen

Kotlin Programming: The Big Nerd Ranch Guide 6. Null Safety and Exceptions
1

So here is my code which is similar to the one on page 92. It isn’t printing the error message to the console for some reason. I am not sure if this because of the main function in Game.kt. I believe it isn’t because I named the function and called it from main in game.kt and still the same problem. Anyone know why by chance?

fun main() {

    var beverage = readLine()
    if(beverage!=null){
        beverage = beverage.capitalize()
        print(beverage)
    } else{
        println("Can't do that without crashing - beverage was null!")
    }
    }
2

Hello,

is the problem, that it does not use the else part?
Have you tested something like this:

var test:String? = null
if(test!=null){
    test = test.capitalize()
    print($test)
} else{
    println("Can't do that without crashing - test was null!")
}

This is working for me.
I can not say how to get into the else branch typing an input to readLine().
The kotlin site says this:
readLine(): Return the line read or null if the input stream is redirected to a file and the end of file has been reached.

Best Regards