Error while installing bench

Hi,

i am new to frappe

i am trying to install frappe and bench but when i try to install bench using easy install method i getting error like this

Traceback (most recent call last):
File “install.py”, line 351, in
install_bench(args)
File “install.py”, line 108, in install_bench
run_playbook(‘develop/install.yml’, sudo=True, extra_vars=extra_vars)
File “install.py”, line 301, in run_playbook
success = subprocess.check_call(args, cwd=os.path.join(cwd, ‘playbooks’))
File “/usr/lib64/python2.7/subprocess.py”, line 542, in check_call
raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command ‘[‘ansible-playbook’, ‘-c’, ‘local’, ‘develop/install.yml’, ‘-e’, ‘@/tmp/extra_vars.json’, ‘–become’, ‘–become-user=frappe’]’ returned non-zero exit status 2

Try installing wkhtmltopdf manually.