dynamic navigation item in panel

public function panel(Panel $panel): Panel
{
    return $panel
    //...
    ->navigationItems($this->getNavigationItems());
}

private function getNavigationItems()
{
    if (\auth()->user()->canAccessPanel(Filament::getPanel('admin'))) {
        return [
            NavigationItem::make(fn () => __('Login as admin'))
                ->url('/admin')
                ->icon('heroicon-o-arrow-right-on-rectangle')
                ->visible(fn () => auth()->user()->canAccessPanel(Filament::getPanel('admin')))
                ->group('Administration')
                ->sort(2),
        ];
    } else {
        return [];
    }
}

Target class [hash] does not exist.