length expanded size cdr WAVE problems fmt ratio filename 8:20.20 88247084 B --- -- ---xx flac 0.4771 sb-jc2003-12-20t01.flac 4:23.00 46393244 B --- -- ---xx flac 0.4918 sb-jc2003-12-20t02.flac 12:52.31 136253756 B --- -- ---xx flac 0.4901 sb-jc2003-12-20t03.flac 6:13.46 65905436 B --- -- ---xx flac 0.5175 sb-jc2003-12-20t04.flac 31:49.22 336799520 B 0.4923 (4 files) App\Http\Controllers\Api\FileDownloadController::download(): Return value must be of type string, none returned