e1d10b4b31362eeaf0dfe063eb7d66ab [shntool] sp2003-07-20t01.shn 419659cbf7f5621eb7261c9cf05b7892 [shntool] sp2003-07-20t02.shn 34d66ea5985849496ce4aca7e11e1a4d [shntool] sp2003-07-20t03.shn 8d82bd1cb7a73161e322cb055c5c0a40 [shntool] sp2003-07-20t04.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned