System not running and command failure

If I give any command to bench I am getting the following,

Traceback (most recent call last):
File “/usr/local/bin/bench”, line 11, in
load_entry_point(‘bench’, ‘console_scripts’, ‘bench’)()
File “/usr/local/lib/python2.7/dist-packages/pkg_resources/”, line 489, in load_entry_point
return get_distribution(dist).load_entry_point(group, name)
File “/usr/local/lib/python2.7/dist-packages/pkg_resources/”, line 2852, in load_entry_point
return ep.load()
File “/usr/local/lib/python2.7/dist-packages/pkg_resources/”, line 2443, in load
return self.resolve()
File “/usr/local/lib/python2.7/dist-packages/pkg_resources/”, line 2449, in resolve
module = import(self.module_name, fromlist=[‘name’], level=0)
File “/home/frappe/.bench/bench/”, line 6, in
from bench.commands import bench_command
File “/home/frappe/.bench/bench/commands/”, line 69, in
from bench.commands.setup import setup
ImportError: cannot import name setup

Tried and search many things but cant restart the system.