12ac727501e35f47209d7c9b4a1bf342 *slip2001-04-06d1t01.shn 3c3f9fb81d31f80f5a2138a0a9ea22ed *slip2001-04-06d1t02.shn 2fb951f75d32068d325d7957d355aded *slip2001-04-06d1t03.shn 4ea6771ec821001d870a74fb25604167 *slip2001-04-06d1t04.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned