advantages of Artificial Intelligence

how to clear zenmap errors 

 First, go to the file -> /etc /apt /sources.list open the file "sources.list" 

and ype the following lines: 

deb http://http.kali.org/kali kali-rolling main non-free contrib
deb-src http://http.kali.org/kali kali-rolling main contrib non-free
deb http://ftp.de.debian.org/debian stretch main
deb http://old.kali.org/kali sana main non-free contrib
deb-src http://old.kali.org/kali sana main non-free contrib
deb http://old.kali.org/kali moto main non-free contrib
deb-src http://old.kali.org/kali moto main non-free contrib

Save and close the file.
Then, at the terminal, run these commands:

apt-get update
apt-get install zenmap

if above technique didnt worked try thios method 

deb http://old.kali.org/kali sana main non-free contrib

add this in ur sources.list using nano or vim editors

and then 

sudo apt-get update 

sudo apt-get install zenmap

worked for me .