I installed "cviebrock/eloquent-sluggable": "^4.8", and I want to add slug path of committees category.

I have a many committees in my menu

Look at my codes,

AppServiceProvider.php

public function register()
{
    Schema::defaultStringLength(191);
    view()->composer('*', function($view) {
        $view->with('catCommittee', Category::where('parent_id',16)->get());
    });
}

header.blade.php

<li class="nav-item dropdown has-mega-menu position-static">
    <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button"
       aria-haspopup="true" aria-expanded="false">
        {{ __('message.menu.committees') }}
    </a>

    <div class="dropdown-menu w-100">
        <div class="px-0 container">
            <div class="row">
                @if (isset($catCommittee))
                    @foreach($catCommittee->split($catCommittee->count()/1) as $row)
                        <div class="col-md-4">
                            @foreach($row as $committee)
                                @if(app()->getLocale() == 'fa')
                                    <a class="dropdown-item text-right"
                                       href="{{ $committee->committees->path() }}">{{ $committee->name }}</a>
                                @else
                                    <a class="dropdown-item text-right"
                                       href="{{ $committee->committees->path() }}">{{ $committee->title_en }}</a>
                                @endif
                            @endforeach
                        </div>
                    @endforeach
                @endif
            </div>
        </div>
    </div>
</li>

Category.php

public function committees()
{
    return $this->belongsToMany(Committee::class,'category_committee','category_id','committee_id');
}

Committee.php

public function path()
{
    $locale = app()->getLocale();
    return "/$locale/committee/$this->slug";
}

I get this error...

Method Illuminate\Database\Eloquent\Collection::path does not exist.