bce4bdde5966cbd5976e92e1d6d5b9b6 *db99-04-21d1t02.shn 226edc0fe53e6aa0e0991b73872e9a65 *db99-04-21d1t01.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned