In last project of kotlin I entered correct answer. My output and excepted output are same but says me the error available

Question

This my code
class MusicPlayer {
private var songs: Array<String> = arrayOf()
//your code goes here
fun add(track: String ){
songs += track
}
fun show(){
for(song in songs ){
println(song)
}
}
fun play(){
println ("playing " + songs[0])
}
}
fun main(args: Array<String>) {
val m = MusicPlayer()

while(true) {
var input = readLine()!!
if(input == "stop") {
break
}
m.add(input)
}
m.show()
m.play()
}

Answer 1

P should be uppercase in `Playing`

Answer 2

Thanks for your response, Thank you Very much It works good.