d83ac4b6cd6f5def53a638e8973b7479 bt2001-09-09d2t01.shn 2a03c1dde2a1674dcfd86a61e9379cf2 bt2001-09-09d2t02.shn 9528fc2b74d9a7418a09f2c4acb27f7d bt2001-09-09d2t03.shn e4bc579099667e564b0036489025b0f0 bt2001-09-09d2t04.shn 974118279e3c531e07ac5d1eb3cd63f8 bt2001-09-09d2t05.shn 07a229af9c2e1911b65c494f9c27e598 bt2001-09-09d2t06.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned