dc458c61909928801fba2c8f56531cef *skb2002-08-09d03t01.shn 989f7a5394e6ef949c00573bb859e851 *skb2002-08-09d03t02.shn 66c3f419048b80a865cd65cc3d94c247 *skb2002-08-09d03t03.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned