Installing on Ubuntu 15.04 - Error help!

Followed GitHub Easy instructions and i got this error.

administrator@skserpserver:~$ sudo bash setup_frappe.sh --setup-production
Installing for Ubuntu vivid amd64
In case you encounter an error, you can post on https://discuss.frappe.io

Adding ubuntu mariadb repo
Installing packages for Ubuntu. This might take time…
Installing wkhtmltopdf
Cannot install wkhtmltodpdf. Skipping…
Adding frappe user
fatal: destination path ‘bench-repo’ already exists and is not an empty directory.
administrator@skserpserver:~$

What does this mean? And any instructions i can follow? I’m a beginner at this. Thanks!

Do you have any fail attempt?

You can remove bench-repo and frappe-bench folder and try installing again.
But its good if you try installing on new clean server.