laravel 7 article argument not passed title in articles view

I am trying to make a single page of website but i cant passed argument article in view

my controller is:

 public function single(Article $article)
    {
        $article->increment('viewCount');
        $comments = $article->comments()->where('approved' , 1)->where('parent_id', 0)->latest()->with(['comments' => function($query) {$query->where('approved' , 1)->latest();}])->get();
        return view('Home.articles.single' , compact('article' , 'comments'));
    }

and my view is

<div class="subject_head">
    <div class="subject_head--title"><h1 class="title">
        
        </h1>
    </div>
</div>

but i cant passed article title. and my model is

 protected $table='articles';
    protected $casts= [
        'images'=>'array'
    ];
    protected $fillable= ['title','slug','description','body','images','tags'];
public function comments()
    {
        return $this->morphMany(Comment::class, 'commentable');
    }
    public function user()
    {
        return $this->belongsTo(User::class);
    }

i passed this and while used

$article->all()

this passed all data

but when use

 $article->title

this method is null

via Chebli Mohamed