gkm2012-03-17d1t01.flac:16d2ccb58c3525fe6b09d20a9a9bfa09 gkm2012-03-17d1t02.flac:f582cf4cb2bc5ac68162cb00a232797e gkm2012-03-17d1t03.flac:2944bb5e658156005f7bfccbaf250394 gkm2012-03-17d1t04.flac:ef8addd3857323c6fdda94a14f0b9780 gkm2012-03-17d1t05.flac:cbdf1134af8c15b670f9211a56a022b0 gkm2012-03-17d1t06.flac:8a08407a2c1e62b682c82b938c6c1dfd gkm2012-03-17d1t07.flac:926ffb2fac5bd06ad83c0f24a50367b2 gkm2012-03-17d1t08.flac:731dcf09659e646d35a0a2140f82b2fe App\Http\Controllers\Api\FileDownloadController::download(): Return value must be of type string, none returned