Update error after install ubuntu 14.04 desktop

please assist me to solve below error…

#sudo apt-get update

Get:14 http://in.archive.ubuntu.com trusty/main Sources [14 B]
Fetched 230 kB in 6s (34.7 kB/s)
W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/trusty/Release Unable to find expected entry ‘restricted/source/Sources’ in Release file (Wrong sources.list entry or malformed file)

E: Some index files failed to download. They have been ignored, or old ones used instead.

I’ve moved this to the https://community.ubuntu.com/c/support-help-requests category because this site isn’t designed to take tech support questions. Sorry. I’d recommend using one of the official support channels listed on the https://community.ubuntu.com/t/finding-help/712 page.