8b9e0a274f652d0ab0aae7a9e8c27d7c *sci990417d1t1.shn 9ca89774e1cfc3e06d4a669f3609422f *sci990417d1t2.shn f5bdb2e2a109762bb8169fd632ad692e *sci990417d1t3.shn 16397ef0ee74b4768603266c03fc338a *sci990417d1t4.shn 7772aa83c82e71eab7e169290b54b5c6 *sci990417d1t5.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned