length expanded size cdr WAVE problems fmt ratio filename 14:04.671 162192694 B cxx he ----- wav 1.0000 thehiggs2018-12-16t01.wav 18:33.500 213807842 B cxx he ----- wav 1.0000 thehiggs2018-12-16t02.wav 14:30.687 167187786 B cxx he ----- wav 1.0000 thehiggs2018-12-16t03.wav 5:20.000 61455842 B cxx he ----- wav 1.0000 thehiggs2018-12-16t04.wav 52:28.858 604644164 B 1.0000 (4 files) App\Http\Controllers\Api\FileDownloadController::download(): Return value must be of type string, none returned