c473f117732166849a39e85bb10d22a9 [shntool] gd67-08-04d1t01.shn 21f81d81a8ad227a58732d8630be5c86 [shntool] gd67-08-04d1t02.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned