7d71f0aa5d6ec74bef6241bf5e8069dd *sci2001-08-02d2t01.shn 5c99437830bb4ae2116b1009b68bffca *sci2001-08-02d2t02.shn 781d6b1b32dc7b63102a7191048761aa *sci2001-08-02d2t03.shn 1cdc641ce6bdb64f6474aeb575a77502 *sci2001-08-02d2t04.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned