How to solve this issue? I got this error while using $ rvm requirements command

Error running 'requirements_debian_update_system ruby-2.2.1',
showing last 15 lines of /home/kiran/.rvm/log/1455793259_ruby-2.2.1/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.

I am unable to install Ruby due to this proble. How to fix it can you help me.