length expanded size cdr WAVE problems fmt ratio filename 5:53.34 62349212 B --- -- ---xx flac 0.5980 sf1999-07-22s1t01.flac 5:56.53 62923100 B --- -- ---xx flac 0.5824 sf1999-07-22s1t02.flac 6:34.32 69576908 B --- -- ---xx flac 0.5677 sf1999-07-22s1t03.flac 10:34.02 111842348 B --- -- ---xx flac 0.5445 sf1999-07-22s1t04.flac 5:14.16 55427276 B --- -- ---xx flac 0.5525 sf1999-07-22s1t05.flac 12:11.18 128991820 B --- -- ---xx flac 0.5609 sf1999-07-22s1t06.flac 46:24.05 491110664 B 0.5646 (6 files) App\Http\Controllers\Api\FileDownloadController::download(): Return value must be of type string, none returned