-*-*-*-*-*-*- If You Are Using Model to fill data in database Use below method-*-*-*-*-**-
-*-*-*-*- In your model Add This-*-*-*-*-*-*-*-
protected $fillable = ['task'];
-*-*-*-*- And Add this to you welcome.blade.php before title tag-*-*-*-*-*-*-*-
<meta name="token" id="token" value="{{ csrf_token() }}">