ConstraintLayout não permite imageView dentro

Olá, pessoal. O ConstraintLayout não está permitindo imageView dentro. Quando retiro a linha, funciona normalmente. Caso contrário, dá este erro: https://imgur.com/w53UhQ2

<androidx.cardview.widget.CardView
    android:id="@+id/item_pacote_cardview"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_margin="8dp"
    android:layout_marginBottom="427dp"
    app:cardCornerRadius="10dp"
    app:layout_constraintBottom_toBottomOf="@id/item_pacote_imagem"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <ImageView
            android:id="@+id/item_pacote_imagem"
            android:layout_width="0dp"
            android:layout_height="100dp"
            android:scaleType="centerCrop"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            tools:src="@sample/pacotes.json/pacotes/imagem" />

        <TextView
            android:id="@+id/item_pacote_local"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="8dp"
            android:background="@android:drawable/screen_background_dark_transparent"
            android:padding="8dp"
            android:textColor="@android:color/white"
            android:textSize="14sp"
            android:textStyle="bold"
            app:layout_constraintBottom_toBottomOf="@id/item_pacote_imagem"
            app:layout_constraintEnd_toEndOf="@id/item_pacote_imagem"
            app:layout_constraintHorizontal_bias="0.0"
            app:layout_constraintStart_toStartOf="@+id/item_pacote_imagem"
            app:layout_constraintTop_toTopOf="@id/item_pacote_imagem"
            app:layout_constraintVertical_bias="1.0"
            tools:text="@sample/pacotes.json/pacotes/local" />

        <View
            android:id="@+id/item_pacote_divisor"
            android:layout_width="0dp"
            android:layout_height="3dp"
            android:background="@android:color/holo_orange_dark"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/item_pacote_imagem" />

        <TextView
            android:id="@+id/item_pacote_dias"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="8dp"
            android:textSize="16sp"
            android:textStyle="bold"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.0"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/item_pacote_divisor"
            tools:text="@sample/pacotes.json/pacotes/dias" />

        <TextView
            android:id="@+id/item_pacote_preco"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginBottom="8dp"
            android:textColor="@android:color/holo_green_dark"
            android:textSize="20sp"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintStart_toStartOf="@id/item_pacote_dias"
            app:layout_constraintTop_toBottomOf="@id/item_pacote_dias"
            tools:text="@sample/pacotes.json/pacotes/preco" />

    </androidx.constraintlayout.widget.ConstraintLayout>

</androidx.cardview.widget.CardView>