kk2017-06-23d1t01.flac:d549010a6dd8db92132b9e589571769c kk2017-06-23d1t02.flac:e80771b45ea1dc518f30a1e8bec65562 kk2017-06-23d1t03.flac:406798235c6ea94f9eafa2e16dca3737 kk2017-06-23d1t04.flac:8cbca07e034e8e5c208de4a2d0ba239f kk2017-06-23d1t05.flac:9e9fba204944758bd4a13d77051cbeff kk2017-06-23d1t06.flac:9fb1ef8f626c38f0c5cfde6c34cf8782 kk2017-06-23d1t07.flac:c936b075a89b19df674b1abd88fb5cdb kk2017-06-23d1t08.flac:15d263135627e3936fce68c0acf7adf0 App\Http\Controllers\Api\FileDownloadController::download(): Return value must be of type string, none returned