Error installing "ros-indigo-ros-controllers" [closed]

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I want to use ros-gazebo-p3at. I have installed ubuntu 14.04/ Ros-indigo / and gazebo as given here .

But while installing ros-controller;

 sudo apt-get install ros-indigo-ros-controllers

i am getting an error;

Err http://packages.ros.org/ros/ubuntu/ trusty/main ros-indigo-force-torque-sensor-controller i386 0.9.3-0trusty-20160627-193242-0700
  403  Forbidden
E: Failed to fetch http://packages.ros.org/ros/ubuntu/pool/main/r/ros-indigo-force-torque-sensor-controller/ros-indigo-force-torque-sensor-controller_0.9.3-0trusty-20160627-193242-0700_i386.deb  403  Forbidden

E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

What to do.