f98d24613d01839054fe14869f05e4ea bt1994-09-01d2t01.shn 4d9180b93d7f7d34a463dd24ec4a0cdf bt1994-09-01d2t02.shn 478058c2defd55be60aa42d795e0e919 bt1994-09-01d2t03.shn 455cdca614147010a5275e2d64656a60 bt1994-09-01d2t04.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned