UM2014-04-11t01.flac:b091e3a0f3b6f62cbe999e1fb5efd2d6 UM2014-04-11t02.flac:601b4f32504409647d888d67b1df6b71 UM2014-04-11t03.flac:a6ff4d2f8bb7edcc55ef8cdaddb08523 UM2014-04-11t04.flac:765dbd9918de5e0b22e95e27d318aef7 UM2014-04-11t05.flac:e6dcebc82ec8638d86b819719672a6b4 UM2014-04-11t06.flac:63036d5269c832550127b84e15e7a260 UM2014-04-11t07.flac:e8c57dc55e46ca1aea71c00ff088bbf5 UM2014-04-11t08.flac:8758e6626fae4f7fdf3df01bb476a313 App\Http\Controllers\Api\FileDownloadController::download(): Return value must be of type string, none returned