werks2012-11-09t01.flac:b6409385a25164a839b13fed0396a5e7 werks2012-11-09t02.flac:df79dbe3f72118f9de480b1c9b0d6195 werks2012-11-09t03.flac:6cae71e9c7f56924a98093c4c651ddaa werks2012-11-09t04.flac:f4a6f321b82820218f36034a23403cc3 App\Http\Controllers\Api\FileDownloadController::download(): Return value must be of type string, none returned