<Card inside cardView isn't showing> The cards are...

# stackoverflow

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Card inside cardView isn't showing
The cards are not showing when im running the simulator (the recyclerView is showing). I think the problem is in "onCreateView" at AdvertsFragement. My MainActivity activity is with binding inflated. The advertsfragement is embedded in the MainActivity thru a navigation bottom bar.
class AdvertsFragment : Fragment() {

private var layoutManager: RecyclerView.LayoutManager? = null
private var adapter: RecyclerView.Adapter? = null

override fun onCreate(savedInstanceState: Bundle?) {...