How to add font awesome icon in toolbar items?

Hi, I am working on xamarin forms where I am trying to add font awesome icon in ToolbarItem

  <ContentPage.ToolbarItems>
        <ToolbarItem Text="&#xf03d;" Clicked="Logout_Clicked" />
        <OnPlatform x:TypeArguments="x:String"
                                Android="fa-solid-900.ttf#fa-solid" 
                                iOS="Font Awesome 5 Free" />
    </ContentPage.ToolbarItems>

It is throwing following error
System.ArrayTypeMismatchException: Attempted to access an element as a type incompatible with the array

Instead of in ToolbarItem if I use in inside page icon is binding without any problem. What could be the issue? If this is not a proper way then please help me out how to add icons?