Couldn't arp for host 10.0.2.15

Fooling the router works fooling the victim returns couldn’t arp for host 10.0.2.15.

Network is set to NAT Network as instructed. Had to install dsniff for arpspoof to run(not shown).

Took me awhile but I found this info which helped me fix the issue.

I am getting the same error arpspoof : couldnt arp for host (routers IP addr) .
Can someone help me ?
Am absolutely beginner

Can you try putting both the VMs on the Bridged adaptor and see if it works?

Try this and connect both machine’s to the same nat network and try again.