mono2016-08-18t01.flac:a87671f5cf6566be277c1e3ef0f1c031 mono2016-08-18t02.flac:f71a0d3f3c71b892cdf53afd905c37ab mono2016-08-18t03.flac:74ba0de3fa05aea1570cd31ee256e3ec mono2016-08-18t04.flac:6b82d1c270d976e833c88656f9c98a80 mono2016-08-18t05.flac:289585c7843e7e6b3aba6f85a28e97f7 mono2016-08-18t06.flac:1c6db237bf7beb145e8e385669adddc4 mono2016-08-18t07.flac:3d53675c34eb9c381772e45b81ecb0c6 App\Http\Controllers\Api\FileDownloadController::download(): Return value must be of type string, none returned