NameError: name 'sys' is not defined

[S3c_Butch3r]

While running the command command "python3 jok3r.py attack -t http://targetwebsite.com/ --add2db test " from the docker, Following python error appears. It seems like the "sys" module is not being imported.

[*] URL given as target, targeted service is HTTP
[!] Unable to resolve scanme.nmap.org
[!] Unexpected error occured: name 'sys' is not defined
Traceback (most recent call last):
File "/root/jok3r/lib/controller/AttackController.py", line 130, in __run_for_single_target
target = Target(service, self.settings.services)
File "/root/jok3r/lib/core/Target.py", line 45, in init
self.__init_with_url()
File "/root/jok3r/lib/core/Target.py", line 68, in __init_with_url
raise TargetException('Unable to resolve {}'.format(url.hostname))
lib.core.Exceptions.TargetException: Unable to resolve scanme.nmap.org

During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "jok3r.py", line 44, in init
controller.run()
File "/root/jok3r/lib/controller/MainController.py", line 23, in run
}.get(self.arguments.mode)(self.arguments, self.settings, self.sqlsess).run()
File "/root/jok3r/lib/controller/AttackController.py", line 86, in run
self.__run_for_single_target(args)
File "/root/jok3r/lib/controller/AttackController.py", line 133, in __run_for_single_target
sys.exit(1)
NameError: name 'sys' is not defined

[decart]

easy fix, just import sys..