Get Error misfortune_cookie

[CodexJ]

Hello, When i use misfortune_cookie exploit i get this error, help me please

[*] Running module exploits/routers/multi/misfortune_cookie...
Traceback (most recent call last):
File "/root/routersploit/routersploit/interpreter.py", line 389, in command_run
self.current_module.run()
File "/root/routersploit/routersploit/modules/exploits/routers/multi/misfortune_cookie.py", line 123, in run
if self.device == "" or re.match(r"^\d+?$", self.device) is None or int(self.device) < 0 or int(self.device) >= len(devices):
File "/usr/lib/python3.6/re.py", line 172, in match
return _compile(pattern, flags).match(string)
TypeError: expected string or bytes-like object

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "rsf.py", line 29, in
routersploit(sys.argv)
File "rsf.py", line 25, in routersploit
rsf.start()
File "/root/routersploit/routersploit/interpreter.py", line 125, in start
command_handler(args, **kwargs)
File "/root/routersploit/routersploit/core/exploit/utils.py", line 177, in wrapper
return fn(self, *args, **kwargs)
File "/root/routersploit/routersploit/interpreter.py", line 394, in command_run
print_error(traceback.format_exc(sys.exc_info()))
File "/usr/lib/python3.6/traceback.py", line 167, in format_exc
return "".join(format_exception(*sys.exc_info(), limit=limit, chain=chain))
File "/usr/lib/python3.6/traceback.py", line 121, in format_exception
type(value), value, tb, limit=limit).format(chain=chain))
File "/usr/lib/python3.6/traceback.py", line 509, in init
capture_locals=capture_locals)
File "/usr/lib/python3.6/traceback.py", line 338, in extract
if limit >= 0:
TypeError: '>=' not supported between instances of 'tuple' and 'int'

[moimoifi]

Are you sure you did pip install -r requirements.txt?
I got the same error, did that, and it worked fine.