Ошибка PermissionError: [Errno 13] Permission denied в python. Где я ошибился?

import re
import sys
import shlex
import socket
import ipaddress
import subprocess
from multiprocessing.dummy import Pool as ThreadPool

# Note, you don't have to enter an API key to simply scan a subnet.
SHODAN_API_KEY = "Insert your API key here if you want to use Shodan"

def port_scan(ip):
    try:
        socket.create_connection((str(ip), 3389), timeout=1)
        return str(ip)
    except:
        pass

    return None

def run_rdesktop_in_docker(ip):
    args = ['/usr/bin/docker'] + shlex.split("run cve-2019-0708:latest {}".format(str(ip)))
    process = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=False)

    try:
        stdout, stderr = process.communicate(timeout=10)
    except:
        process.kill()
        stdout, stderr = process.communicate(timeout=1)

    returncode = process.returncode

    if returncode != 0:
        return None
    elif stdout is not None and re.search('Target is VULNERABLE', stdout.decode('UTF-8')):
        return str(ip)

    return None

def shodan_search(search_term):
    try:
        import shodan
    except:
        print('Please install shodan if you want to get hosts using the API.')
        sys.exit(1)

    api = shodan.Shodan(SHODAN_API_KEY)
    results = api.search(search_term)

    if results['total'] > 0:
        input("Shodan search returned {} hosts, press enter to start scan".format(results['total']))
        return [x['ip_str'] for x in results['matches']]

    return None

def main():
	if len(sys.argv) < 2:
		print('Usage with a subnet: scan_with_docker.py x.x.x.x/x')
		print('Usage with shodan: scan_with_docker.py \'hostname:"*.example.com" port:3389\'')
		print(sys.argv)
#		sys.exit(1)

	try:
		hosts_to_scan = ipaddress.ip_network(sys.argv[1]).hosts()
	except:
		print("Not a valid subnet. Trying to use as Shodan search terms ...")
		hosts_to_scan = shodan_search(sys.argv[1])

	if hosts_to_scan is None:
		print('No available hosts to scan. Exiting.')
		sys.exit(1)
		
	port_scan_pool = ThreadPool(100)
	rdesktop_pool = ThreadPool(20)

	port_scan_result = port_scan_pool.map(port_scan, hosts_to_scan)

	try:
		port_scan_pool.join()
		port_scan_pool.close()
	except:
		pass

	# Filter the result to only include IP-addresses
	hosts_with_port_3389_open = [x for x in port_scan_result if x is not None]
	print(hosts_with_port_3389_open)
	rdesktop_result = rdesktop_pool.map(run_rdesktop_in_docker, hosts_with_port_3389_open)
	try:
		rdesktop_pool.join()
		rdesktop_pool.close()
	except:
		pass

	# Filter the result to only include vulnerable hosts
	hosts_with_vuln = [x for x in rdesktop_result if x is not None]

	if len(hosts_with_vuln) > 0:
		print('Vulnerable hosts:')
		for host in hosts_with_vuln:
			print(host)
	else:
		print('No vulnerable hosts found')

if __name__ == '__main__':
	main()

Ошибка