sci2018-09-14t01.flac:073b42bece1a43fa48cf2b03dfcbe1d2 sci2018-09-14t02.flac:52499e2d96c138d864941c664f949ffb sci2018-09-14t03.flac:b3915a6b313e1cdb9793b78fa86c4dd7 sci2018-09-14t04.flac:5d4857d2860f089de13ce2f9c7ed493c sci2018-09-14t05.flac:25b702722e73588f32045a3c7544e03f sci2018-09-14t06.flac:c1e9742c1e1efec9bcdbabe132f3ae5d sci2018-09-14t07.flac:530673b262fcd7ffe93e4d9c353b6a41 sci2018-09-14t08.flac:ecea8dd280611e3c9a961087ff61ffc1 sci2018-09-14t09.flac:3d3e56988b7117cf236067df5540044a sci2018-09-14t10.flac:6ed6a4cf4224aa696090a91920964c1c App\Http\Controllers\Api\FileDownloadController::download(): Return value must be of type string, none returned