Duplicate sources.list error while sudo apt-get update

Question

I was installing rabbitMQ , it get installed properly but while update i got below warnings. I am also not able to enable rabbitmq-management plugin.

1. Reading package lists... Done W: Duplicate sources.list entry http://www.rabbitmq.com/debian/ testing/main amd64 Packages (/var/lib/apt/lists/www.rabbitmq.com_debian_dists_testing_main_binary-amd64_Packages)

2. W: Duplicate sources.list entry http://www.rabbitmq.com/debian/ testing/main i386 Packages (/var/lib/apt/lists/www.rabbitmq.com_debian_dists_testing_main_binary-i386_Packages)

Answer 1

Duplicate sources.list:

means that "Your sources.list really has duplicate entries."

Check you source list, and also see: https://askubuntu.com/questions/120621/how-to-fix-duplicate-sources-list-entry

I am also not able to enable rabbitmq-management plugin.

What do you mean? do you have errors ? Can you post it ?