erro nas dependências!!!

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    //implementation 'androidx.appcompat:appcompat:1.1.0'
    implementation 'com.android.support:appcompat-v7:28.1.0'
    implementation 'com.android.support:design:28.1.0'
    implementation 'com.android.support.cardview-v7:26.0.1'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
}

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:fab="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <include
            android:id="@+id/lista_transacoes_resumo"
            layout="@layout/resumo_card" />

        <ListView
            android:id="@+id/lista_transacoes_listview"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_alignBottom="@id/lista_transacoes_resumo"
            android:layout_alignParentBottom="true"
            android:divider="@null"
            android:dividerHeight="0dp" />

    </LinearLayout>

    <com.github.clans.fab.FloatingActionMenu
        android:id="@+id/lista_transacoes_adiciona_menu"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_alignParentBottom="true"
        android:layout_alignParentRight="true"
        android:paddingBottom="10dp"
        android:paddingLeft="10dp"
        android:paddingRight="10dp"
        fab:menu_backgroundColor="#ccffffff"
        fab:menu_colorNormal="#367C25"
        fab:menu_colorPressed="#266817"
        fab:menu_colorRipple="#195b09"
        fab:menu_labels_colorNormal="#fff"
        fab:menu_labels_ellipsize="end"
        fab:menu_labels_singleLine="true"
        fab:menu_labels_textColor="#000">


        <com.github.clans.fab.FloatingActionButton
            android:id="@+id/lista_transacoes_adiciona_receita"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/ic_arrow_top_right_white_24dp"
            fab:fab_colorNormal="@color/receita"
            fab:fab_colorPressed="#2945fc"
            fab:fab_colorRipple="#3216e2"
            fab:fab_label="@string/adiciona_receita"
            fab:fab_size="mini" />

        <com.github.clans.fab.FloatingActionButton
            android:id="@+id/lista_transacoes_adiciona_despesa"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/ic_arrow_bottom_left_white_24dp"
            fab:fab_colorNormal="@color/despesa"
            fab:fab_colorPressed="#E8004A"
            fab:fab_colorRipple="#C20024"
            fab:fab_label="@string/adiciona_despesa"
            fab:fab_size="mini" />

    </com.github.clans.fab.FloatingActionMenu>

</RelativeLayout>