Error : 2

Article.php

    public function CategoryArticle(){
      return $this->belongsTo('App\CategoryArticle','kategori_article','id_category');
    }

ArticleController.php

	public function viewArticle($slug_article){
		$article = Article::where('slug_article', $slug_article)->first()->with('Article.CategoryArticle')->get();
		$halaman = 'blog';
		return view('article.show', compact('article','halaman'));
	}

CategoryArticle.php

    public function CategoryArticle(){
        return $this->hasMany('App\Article');
    }

show.blade.php

    @foreach ($article as $item)
      <h2>{!! $item->judul_article !!}</h2>
      {!! $item->konten_article !!}
      {!! $item->CategoryArticle->nama_kategori !!}
    @endforeach