c340804280263446d03f73de0ff51e18 bt1992-02-22d1t01.shn 3103416728febe17707cea1f951059e3 bt1992-02-22d1t02.shn ba1bbb16b38588c9ba6dda5f19d8c422 bt1992-02-22d1t03.shn 8c9a9f979a5b04173b50d61f4cb000a9 bt1992-02-22d1t04.shn 1dbc6e4e23eba316dc6a275ba0e655c4 bt1992-02-22d1t05.shn 5f6464f872f462368d79b9e45b2c4aca bt1992-02-22d1t06.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned