a74ce0ef371b5c6e0bfff4597b8f704d *sf01-02-23d2t01.shn 718f16748065f67e9ded3d3ee99ff62e *sf01-02-23d2t02.shn 96f0cfe54473e092117b067e742a6cca *sf01-02-23d2t03.shn cd23db9ad633829f979d160705a4049c *sf01-02-23d2t04.shn 6906e754149ea5ae8f454e4782ca80e6 *sf01-02-23d2t05.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned