Laravel Ajax Call 500 Internal Server error

Saya ingin mengabung laravel dengan ajax. tetap waktu di panggil malah error 500 ini model vendor.php

 class Vendor extends Model
{
   	public function coba()
    {
    	return $this->hasMany('App\Internet');
    }
}

Ini model internets.php

 public function student()
    {
    	return $this->belongTo('App\Vendor');
    }

Ini Controller

 ublic function getFormPaket()
    {
        $IDs=Vendor::select('id_vendor')->get();
        return view('paket2',compact('IDs'));
    }

    public function getDataPaket(Request $request)
    {
        if ($request->ajax())
        {
            $student=Vendor::find($request->studentid);
            $studies=$student->coba;
            return response($studies);
        }
    }

Ini paket2.balde.php ajax

 <script type="text/javascript">
		$(document).ready(function(){
			loadScore(1)
		})

		function loadScore(studentid)
		{
			$.ajax({
				type : 'get',
				url :"{{url('getDataScore')}}",
				data : {studentid:studentid},
				dataType : 'json',
				success:function(data)
				{
					console.log(data);
				}
			})
		}
	</script>