Error:

Recomposer.applyAndCheck
java.lang.IllegalStateException - Unsupported concurrent change during composition. A state object was modified by composition as well as being modified outside composition.

From time to time I have error with unsupported concurrent change.
I try to understand the source of the problem. When I was learning composable I was using coroutineScope with Dispatchers.IO to update state and it cause the same problem. I have read https://developer.android.com/develop/ui/compose/side-effects and I do not see any issues in my code.

What kind of problem is this?
Maybe during changes on state I should use viewModelScope~?

     is HomeEvent.OnFreeCouponDeclined -> {
                homeState.update {
                    copy(isDeclined = false)
                }
            }

should it be?

     is HomeEvent.OnFreeCouponDeclined -> {
viewModelScope.launch {
                homeState.update {
                    copy(isDeclined = false)
                }
            }
}

Maybe here, could it be wrong?

    private fun observeInventory() {
        viewModelScope.launch {
            (Dispatchers.Default) {
                getInventoryInteractor.invoke().collectLatest {
                    (Dispatchers.Main) {
                        homeState.value = homeState.value.copy(categories = it.map {
                            it.copy(subCategories = emptyList())
                        })
                    }
                }
            }
        }
    }

It looks I sometimes use viewModelScope to change state and sometimes not.
Please I kindly ask you for advice, what I could look for?

Maybe this code?

   LaunchedEffect("${state.currentPage}_${sliderHoldTimestamp}_${sliderItems.size}") {
        delay(AUTO_SLIDER_DELAY)
        coroutineScope.launch {
            if (sliderItems.isNotEmpty() && state.pageCount != 0) {
                var newPosition = state.currentPage + 1
                if (newPosition > sliderItems.size - 1) newPosition = 0
                state.animateScrollToPage(newPosition.mod(state.pageCount))
            }
        }
    }

This is auto slider, I had to workaround it like this because of the update from accompanist to newer approach.

import androidx.compose.foundation.pager.HorizontalPager
import androidx.compose.foundation.pager.rememberPagerState

    const val foundation = "androidx.compose.foundation:foundation:1.6.1"