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Always when I run sudo apt-get-update I get the error messages below. how can I fix that ? 

W: Failed to fetch http://ppa.launchpad.net/chris-lea/node.js/ubuntu/dists/vivid/main/source/Sources  404  Not Found
W: Failed to fetch http://ppa.launchpad.net/chris-lea/node.js/ubuntu/dists/vivid/main/binary-i386/Packages  404  Not Found 
E: Some index files failed to download. They have been ignored, or old ones used instead.
Ravan
  • 9,567
gmadeira
  • 1

1 Answers1

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you have added ppa for node.js and currently that is not available on that link . thats why is it giving 404 Not Found error. you can see here. there is no vivid repository.

solution :

remove that ppa file from /etc/apt/sources.list.d/ or if there is no file related chris-lea/node.js then open file /etc/apt/sources.list and search entry related chris-lea/node.js and delete that line . then do update 

sudo apt-get update
pl_rock
  • 11,715