f57f91050b373398f0bb731644c8dd12 *sci2002-10-19d3t01.shn ca565cc807d8b57ab54b6586ac6a2242 *sci2002-10-19d3t02.shn 3df716238b5f5a172acb840b32141b04 *sci2002-10-19d3t03.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned