3c021645ec00df83ee2fc629ddfbc3fe *slip2002-02-22d3t01.shn d38e38ea950cab338d0df53abf6fa320 *slip2002-02-22d3t02.shn bd875e0192150ee9f369eb7d5b7ac7eb *slip2002-02-22d3t03.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned