0619adc6e0bca8df425b435d055e9722 [shntool] gd70-11-10t01.shn 101ad10cb46e253d4d67bd3968967f61 [shntool] gd70-11-10t02.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned