eits2001-06-23d1t01.flac:54a35c6e43a1e30983e248cf755c0cf1 eits2001-06-23d1t02.flac:9d91d1d3e6d38e2277371f4250c0c052 eits2001-06-23d1t03.flac:e4669f9549c4a235a18205ee59a51668 eits2001-06-23d1t04.flac:82a8ef34d5ea25f6ea3592a87bcae78c App\Http\Controllers\Api\FileDownloadController::download(): Return value must be of type string, none returned