I’m a beginner in terms of servers, and I’m trying to set up my droplet - something I’ve never done before. I went through the “create sudo privileged user” part and all that, and I wanted to set up mongodb.
There are 2 issues I noticed:

1. The sudo apt-get update command resulted in a lot of success messages and one failure: Err8: http://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.0/multiverse amd64 Package 404 Not Found
2. After this, when I ran the next command (sudo apt-get install -y mongodb-org), it threw an error as follows: E: Unable to locate package mongodb-org

What is the solution here?
Thanks.