gpn-2013-06-28t01.flac:e9c5b82678a9d03a19135c20160830d1 gpn-2013-06-28t02.flac:fa9e09e5cc7fdc9a6c02918971271f22 gpn-2013-06-28t03.flac:62f7b26e8bc9e49f35cb4977aaced4f0 gpn-2013-06-28t04.flac:b224be5b9b5f4059927f9fa406ee23c0 gpn-2013-06-28t05.flac:3051260989c9ae5b1849b79ad169ed6a gpn-2013-06-28t06.flac:d9d7ce1b05d1acfae376abd6be2d3720 gpn-2013-06-28t07.flac:6e74426c120e44f1fb3b21a76f86ccf6 gpn-2013-06-28t08.flac:3f0f5c3450a95b7e79119bb1987cf945 App\Http\Controllers\Api\FileDownloadController::download(): Return value must be of type string, none returned