1b3e1b3152d74507f225e7afe52bf50d *skb01-04-12d3t1.shn a6bc6ebf5e0cfe3939d947522ab2d466 *skb01-04-12d3t2.shn 6d1dfa874f2dde0461c13f48d95e694b *skb01-04-12d3t3.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned