Unable to Add NAE host to splunk getting error

[shaz7600]

HellO

I have splunk Enterprise Version:8.0.1 on my pc .I am trying to add Cisco NAE Network Assurance Engine host to splunk. I am getting error every time i try to add NAE host. I am attaching screen shot. Please take a look. I have tried deleting files under Local folder situated under C:\Program Files\Splunk\etc\apps\TA_cisco-candid\local then restart splunk that doesn't help either as work around.

Please take a look of actual error.
Encountered the following error while trying to update: Error while posting to url=/servicesNS/nobody/TA_cisco-candid/admin/cisco_nae_server_setup/cisco_nae_server_setup_settings

I would appreciate your help.

Thanks,