Change layout it to avoid duplicates.

It didn't cause any issue as this layout is not referenced anywhere.

app/src/main/res/layout/activity_fragmentappmanager.xml

@@ -6,7 +6,7 @@
     tools:context=".activities.appmanager.AppManagerActivity">
 
     <LinearLayout
-        android:id="@+id/charts_main_layout"
+        android:id="@+id/appmanager_main_layout"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:orientation="vertical">