a0f9a2ce07dab2984b289c924cd13a19 *sci2002-04-06d3t1.shn 439aa64895e937c8f3903ddf5c40b8d5 *sci2002-04-06d3t2.shn 90ec2aa87016e6a215d968df8aaadbba *sci2002-04-06d3t3.shn bd9922cf9dc058b04d49bf851b1c5907 *sci2002-04-06d3t4.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned