61bd9c6695c1591e13336b5870067f82 *sci2001-07-01d2t1.shn 57d222e8df5d6ea8fc9cdd0396af93bd *sci2001-07-01d2t2.shn 824ed8d95cae890e78a86a2c1c974d35 *sci2001-07-01d2t3.shn 646e72f35f98a014da649f0e1f0f13f9 *sci2001-07-01d2t4.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned