length expanded size cdr WAVE problems fmt ratio filename 14:49.200 256089644 B cxx -- ---xx flac 0.6650 thehiggs2018-02-08t01.flac 15:21.421 265369178 B cxx -- ---xx flac 0.6925 thehiggs2018-02-08t02.flac 13:20.016 230404544 B cxx -- ---xx flac 0.6717 thehiggs2018-02-08t03.flac 43:30.636 751863366 B 0.6768 (3 files) App\Http\Controllers\Api\FileDownloadController::download(): Return value must be of type string, none returned