public function hadPassedActivity($activity)
{
    $result = $this->activityResults()->where('activity_id',$activity->id)->first();//line 143
    return ($result != null && $result->remarks == 'pass');
}

<section class="page-header">
    <a href="{{@$lesson->id}}/activity">
    <button class="btn btn-success pull-right">
        @if($lesson->activity->isAccomplished)
            View
        @else
            Design
        @endif
         Activity
    </button>
    </a>
    <h3>{{$lesson->title}}<br>
        <h5><i>{{$course->title}} lesson # {{$lesson->order}}</i></h5>
        <small id="lesd">{{$lesson->description}}</small>
    </h3>
</section>