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ios - kotlin.native.concurrent.InvalidMutabilityException: 凍結の突然変異の試み when using ktor in Kotlin Multiplatform (iOS)

I am trying to build a simple Kotlin Multiplatform app that calls to the internet to fetch some Strings from the intern

I am trying to build a simple Kotlin Multiplatform app that calls to the internet to fetch some Strings from the internet with ktor. I took some functions from Kotlin conference app which I compiled and it works fine on both Android and iOS.

However, in my sample app, it only works on Android, but on iOS it returns

kotlin.native.concurrent.InvalidMutabilityException: mutation attempt of frozen <object>@c422ffe8

Here is the GitHub repository and below is my code:

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How recursive function control flow change for static variable?

I am trying to learn some stuff about recursive function and I try to run this

I am expecting that it will give me an output like this as similar to any local variable called in a recursive function.

But compiler gives me an output like this

I can't understand why this kind of output comes. Can anyone explain?


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