ac1a1406d20be1c97f16647205b49085 *sci2001-06-11d2t1.shn a5f21ebf6cca855c6f918f890874fabb *sci2001-06-11d2t2.shn 5d5c7e29359c534beb3a98e3a2adbd9e *sci2001-06-11d2t3.shn App\Http\Controllers\Api\FileDownloadController::download(): Return value must be of type string, none returned