Jonathan Gravato

I am trying to run an update on Ubuntu and am coming to this error: W: Failed to fetch http://download.webmin.com/download/repository/dists/sarge/Release Unable to find expected entry 'contribdeb/binary-amd64/Packages' in Release file (Wrong sources.list entry or malformed file) Going to the URL I find references to this entry: contrib/binary-amd64/Packages The entry it is looking for 'contribdeb' seems wrong but I am not sure on how to change it. Thank you.