rvm requirements error ruby linux mint

I write

rvm requirements


And get this:

    Checking requirements for mint.
Installing requirements for mint.
Updating system.............................
Error running 'requirements_debian_update_system ',
showing last 15 lines of /home/liubovi/.rvm/log/1425156551/update_system.log
+ case "${TERM:-dumb}" in
+ case "$1" in
+ [[ -t 2 ]]
+ return 1
+ printf %b 'There has been error while updating '\''apt-get'\'', please give it some time and try again later.
404 errors should be fixed for rvm to proceed. Check your sources configured in:
    /etc/apt/sources.list
    /etc/apt/sources.list.d/*.list
\n'
There has been error while updating 'apt-get', please give it some time and try again later.
404 errors should be fixed for rvm to proceed. Check your sources configured in:
    /etc/apt/sources.list
    /etc/apt/sources.list.d/*.list

+ return 100
Requirements installation failed with status: 100.

What should I do?

Linux min 11 ( But updated to last version)