Phpspreadsheet can't detect file which exists

<?php

use PhpOffice\PhpSpreadsheet\Reader\Xlsx as XlsxReader;
use Illuminate\Database\Seeder;

class DeliveryRoutesTableSeeder extends Seeder {
public function run() {
    $customersPerRouteFile = storage_path("customers_per_delivery_route.xlsx");

    $reader = new XlsxReader();
    $reader->setReadDataOnly(true);
    $spreadsheet = $reader->load($customersPerRouteFile);

    dd($spreadsheet);
    factory(App\DeliveryRoute::class)->create();
}

}

Hi, that file exists will full access permissions. It is stored in /storage Laravel framework directory. What am I missing from this. The absolute path checkout from the terminal. Kindly assist.

via Chebli Mohamed