XML : Android studio - couldn't resolve @id/default_state

I have this problems when I try to add the Fab in my xml code but I don't understand why..I tried to clean my project and invalid cache and restart but nothing changes.

This is my xml code:

  <android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"  xmlns:app="http://schemas.android.com/apk/res-auto"  xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/left_drawer_activity_tickets"  android:layout_width="match_parent"  android:layout_height="match_parent"  android:fitsSystemWindows="true"  tools:openDrawer="start">      <android.support.v4.widget.DrawerLayout      xmlns:android="http://schemas.android.com/apk/res/android"      android:id="@+id/right_drawer_activity"      android:layout_width="match_parent"      android:layout_height="match_parent">            <android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"          xmlns:app="http://schemas.android.com/apk/res-auto"          xmlns:tools="http://schemas.android.com/tools"          android:layout_width="match_parent"          android:layout_height="match_parent"          android:fitsSystemWindows="true"          android:background="#DDDDDD"            >            <android.support.design.widget.AppBarLayout              android:layout_width="match_parent"              android:layout_height="wrap_content"              android:theme="@style/AppTheme.AppBarOverlay"                android:id="@+id/appbar_activity"              >                <android.support.v7.widget.Toolbar                  android:id="@+id/toolbar_activity"                  android:layout_width="match_parent"                  android:layout_height="?attr/actionBarSize"                  android:background="?attr/colorPrimary"                  app:popupTheme="@style/AppTheme.PopupOverlay" />                <SearchView                  android:layout_width="match_parent"                  android:layout_height="wrap_content"                  android:imeOptions="actionSearch"                  android:id="@+id/search_activity"                  android:iconifiedByDefault="false"                  android:focusable="false"                  android:focusableInTouchMode="true"                  android:queryHint="Search..."                  android:visibility="gone"                  />              </android.support.design.widget.AppBarLayout>                  <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"              android:layout_width="match_parent" android:layout_height="match_parent"              android:background="#DDDDDD"              android:layout_margin="5dp"                  >                    <it.prova.widgets.AnimatedExpandableListView                  android:id="@+id/listViewTickets"                  android:layout_width="wrap_content"                  android:layout_height="match_parent"                  android:layout_marginLeft="5dp"                  android:layout_marginRight="5dp"                    android:layout_marginTop="55dp"                  />              </RelativeLayout>                          <io.github.yavski.fabspeeddial.FabSpeedDial              android:id="@+id/fab_option_activity"              android:layout_width="wrap_content"              android:layout_height="wrap_content"              android:layout_gravity="bottom|end"                app:fabGravity="bottom_end"              app:fabMenu="@menu/fab_speed_dial_tickets_minimal"              app:miniFabBackgroundTint="@android:color/white"              app:miniFabDrawableTint="?attr/colorPrimaryDark"              app:miniFabTitleTextColor="?attr/colorPrimaryDark" />          </android.support.design.widget.CoordinatorLayout>                <android.support.design.widget.NavigationView          android:id="@+id/nav_view_right_activity"          android:layout_width="match_parent"          android:layout_height="match_parent"          android:layout_gravity="end"          android:fitsSystemWindows="true"          app:headerLayout="@layout/nav_header_right_customer"          app:menu="@menu/menu_right_customer" />      </android.support.v4.widget.DrawerLayout>      <android.support.design.widget.NavigationView      android:id="@+id/nav_view_left_activity"      android:layout_width="match_parent"      android:layout_height="match_parent"      android:layout_gravity="start"      android:fitsSystemWindows="true"      app:headerLayout="@layout/nav_header_main"      app:menu="@menu/menu_left_drawer" />    

How can I do? Thanks in advance.

Edit

Fab that I used is this

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