kf2014-02-07s01t01.flac:1e7ed1fb7c36b42ba85246e23209d587 kf2014-02-07s01t02.flac:31f0654a4fcb3eea5b980efe78ac5112 kf2014-02-07s01t03.flac:ec157dfdea05a789c103363e1de8638e kf2014-02-07s01t04.flac:e53164b02cb3afdc5c6dcd61933e3b9d kf2014-02-07s01t05.flac:c4a70781fa9f546d51e48bec413bf897 App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned