laravel excel export with dinamic image

<?php

namespace App\Exports;

use App\Models\Otdp;
use Maatwebsite\Excel\Concerns\FromCollection;
use Maatwebsite\Excel\Concerns\WithHeadings;
use Maatwebsite\Excel\Concerns\WithTitle;

use Maatwebsite\Excel\Concerns\WithDrawings;
use PhpOffice\PhpSpreadsheet\Worksheet\Drawing;

class DataExport implements FromCollection, WithHeadings, WithTitle, WithDrawings
{
    protected $requestawal;
    protected $requestakhir;


    function __construct($requestawal, $requestakhir)
    {
        $this->requestawal = $requestawal;
        $this->requestakhir = $requestakhir;
    }
    public function collection()
    {
        $data = data::select( 
            'nama',
            'ttl', 
        )->whereBetween('ttl', [$this->requestawal, $this->requestakhir])->get();
        return $Otdp;
    }

    public function headings(): array
    {
        return [
            'nama',
            'ttl', 
            'foto', 
        ];
    }

    public function title(): string
    {
        return 'data';
    }
    public function drawings()
    {
        $data = data::select( 
            'nama',
            'ttl', 
            'foto'
        )->whereBetween('ttl', [$this->requestawal, $this->requestakhir])->get();
        $drawings = [];

        $rowNum = 2;
        foreach ($data as $row) {

            $drawing = new Drawing();
            if ($row->foto == null || $row->foto == "") {
                $drawing->setPath(public_path('/assets/images/default.jpg'));
            } else {
                $drawing->setPath(public_path('/assets/uploads/images/') . $row->foto);
            }
            $drawing->setheight(20);
            $drawing->setCoordinates('N' . $rowNum); //kolom name
            $drawings[] = $drawing;

            $rowNum++;
        }

        return $drawings; 
    }
}