dfb6c15b92894f2aabe9661b81a2ed2a *skb01-04-12d1t1.shn 5fc0e114b70e21af41fe2cd64c8f9f01 *skb01-04-12d1t2.shn dfc6f3342f599688fdb2c0244207fc29 *skb01-04-12d1t3.shn 22a60763d79b942d7b74302f34fae22b *skb01-04-12d1t4.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned