Atomic Kotlin exercise problem

[DavitTsiskarashvili]

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Hi,

I'm using Atomic Kotlin exercises in Android Studio (Edu Tools plugin). Most of the time I write a code and hit check, it states it is incorrect, Abc was expected instead of abc. In the peek solution everything seems fine, there is no mistakes in the code.

I wonder if anyone can explain why it is doing so and how can I fix it