I want to install Kali Linux tools in Ubuntu 16.04 LTS. But I'm getting this error message. How do I solve this issue?
Look at the second command in the screen-shot. I guess your pull from git failed because there already is a folder by the name katoolin in current directory. You will have to use
rm -rf katoolin to remove the folder and its content.
Because of this failure, katoolin.py is not downloaded and chmod command fails to find it. Hence, the error.