length expanded size cdr WAVE problems fmt ratio filename 2:41.656 31037936 B cxx -- ---xx flac 0.3912 gs2016-09-09b.t01.flac 6:00.798 69273356 B cxx -- ---xx flac 0.5354 gs2016-09-09b.t02.flac 5:28.539 63079604 B cxx -- ---xx flac 0.4976 gs2016-09-09b.t03.flac 6:15.533 72102424 B cxx -- ---xx flac 0.4992 gs2016-09-09b.t04.flac 9:10.773 105748376 B cxx -- ---xx flac 0.4643 gs2016-09-09b.t05.flac 10:27.731 120524448 B cxx -- ---xx flac 0.5152 gs2016-09-09b.t06.flac 40:05.031 461766144 B 0.4933 (6 files) App\Http\Controllers\Api\FileDownloadController::download(): Return value must be of type string, none returned