slip2007-07-14.ka500.722.t01.flac:92b72e8a0a5e889be0e010f399be8833 slip2007-07-14.ka500.722.t02.flac:001fa8a074527f306746fba46722beb0 slip2007-07-14.ka500.722.t03.flac:9a76be9b834d8cec32521757cc32aa8f slip2007-07-14.ka500.722.t04.flac:13d07a62e858843151a64d8aa093471c slip2007-07-14.ka500.722.t05.flac:f1cab540f64f323dbd77ad83dce6d0cb App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned