Rosdep experienced an internal error

Amirhosseins-MacBook-Pro:ros_catkin_ws amirhosseingholami$ rosdep install --from-paths src --ignore-src --rosdistro kinetic -y

ERROR: Rosdep experienced an internal error.
Please go to the rosdep page [1] and file a bug report with the message below.
[1] : http://www.ros.org/wiki/rosdep

rosdep version: 0.11.8

Bad installer [pip]: [Errno 2] No such file or directory

Please ask for help on answers.ros.org or open an issue on the appropriate issue tracker, in this case https://github.com/ros-infrastructure/rosdep/issues, instead of posting here on discourse. Also please look for existing, similar issues (I believe this issue has already occurred on the rosdep issue tracker).

See http://wiki.ros.org/Support