GM_2014-12-13_ak50_01.flac:8dc990c4109a0457abc4472de2c56c62 GM_2014-12-13_ak50_02.flac:a7ebcbc586a40beec737c25e2bf2693e GM_2014-12-13_ak50_03.flac:20dfa081517fc7ad43af96a483cc4842 GM_2014-12-13_ak50_04.flac:713850c755b4b35cb5e936e4e9b4bda0 GM_2014-12-13_ak50_05.flac:8f806dd0b1ce57c57c601b65e5b37f76 GM_2014-12-13_ak50_06.flac:2b331b3fe51ff0dd76e0bd85b06e758b GM_2014-12-13_ak50_07.flac:d53344f2b4c8ed36739ad99900023b20 GM_2014-12-13_ak50_08.flac:0154907552bbe93d3c6f53da80d892a6 GM_2014-12-13_ak50_09.flac:47a0ab6a99d8e268aca369b89f9e7a11 GM_2014-12-13_ak50_10.flac:931ef44836cb3ee10dac04934420cfa1 App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned