```@Serializable data class SuccessResponse<T&g...

# serialization

[Wishnuprathikantam]

@Serializable
data class SuccessResponse<T>(
        val status: Int,
        val data: T,
        val message: String
) : ApiResponse()

@Serializable
data class ErrorResponse(
        val status: Int,
        val errorCode: Int,
        val message: String
) : ApiResponse()

@Serializable
sealed class ApiResponse

//KVision: Ajax request
remoteCall(
                ApiRoutes.LOGIN,
                Json.encodeToString(AdminRequest.serializer(), body),
                ApiResponse.serializer(),
                <http://HttpMethod.POST|HttpMethod.POST>
        )

when (apiResponse) {
    is SuccessResponse<*> -> {
        val data = apiResponse.unsafeCast<SuccessResponse<T>>()
        success(data)
    }
    is ErrorResponse -> {
        failure(apiResponse)
    }
    else -> {
        console.log(apiResponse)
    }
}

Frontend: KVision Framework (Kotlin/JS)
Backend: Ktor with GSON
Need help with deserializing sealed classes, without else block throws NoWhenBranchMatchedException
Thanks in advance.