0899a7df9113d2c3997c5cf09e69d73c *sci010308d3t1.shn 66e90c7c9422cccd88d891781d0bba86 *sci010308d3t2.shn 15f34f76b00ac0909862e30914c10b5e *sci010308d3t3.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned