9f4bf4a0908ae2301b897e803d8fe41f [shntool] gd71-10-31t01.shn 411d03ff226e74607d438ce31a22589b [shntool] gd71-10-31t02.shn e304b9ad60d99ab92215afa7b5e6564b [shntool] gd71-10-31t03.shn f3051f3ffebad80fbabead263fed3e44 [shntool] gd71-10-31t04.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned