length expanded size cdr WAVE problems fmt ratio filename 12:24.812 429022906 B cxx he ----- wav 1.0000 gs2018-05-05t01.wav 11:52.320 410307076 B cxx he ----- wav 1.0000 gs2018-05-05t02.wav 10:18.855 356471314 B cxx he ----- wav 1.0000 gs2018-05-05t03.wav 10:02.789 347217586 B cxx he ----- wav 1.0000 gs2018-05-05t04.wav 13:45.203 475327852 B cxx he ----- wav 1.0000 gs2018-05-05t05.wav 58:23.979 2018346734 B 1.0000 (5 files) App\Http\Controllers\Api\FileDownloadController::download(): Return value must be of type string, none returned