b4ae93595eca30b94b948b78dec64121 *gd70-06-04d1t03.shn 5e6247df6c75606f909f0c030ff8788f *gd70-06-04d1t02.shn 47b29e824e68a306f4417c439764c94e *gd70-06-04d1t01.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned