Traceback (most recent call last):

 "/usr/share/w3af/w3af/core/ui/gui/main.py", line 609, in start_scan_wrap
real_scan_start()

 "/usr/share/w3af/w3af/core/ui/gui/main.py", line 600, in real_scan_start
self.w3af.start()

 "/usr/share/w3af/w3af/core/controllers/w3afCore.py", line 191, in start
self.strategy.start()

 "/usr/share/w3af/w3af/core/controllers/core_helpers/strategy.py", line 96, in start
self._seed_discovery()

 "/usr/share/w3af/w3af/core/controllers/core_helpers/strategy.py", line 423, in _seed_discovery
self._seed_producer.seed_output_queue(cf.cf.get('targets'))

 "/usr/share/w3af/w3af/core/controllers/core_helpers/consumers/seed.py", line 104, in seed_output_queue
kb.kb.add_fuzzable_request(_seed)

 "/usr/share/w3af/w3af/core/data/kb/knowledge_base.py", line 283, in decorated
return _method(self, *args, **kwargs)

 "/usr/share/w3af/w3af/core/data/kb/knowledge_base.py", line 671, in add_fuzzable_request
self.add_url(fuzzable_request.get_url())

 "/usr/share/w3af/w3af/core/data/kb/knowledge_base.py", line 283, in decorated
return _method(self, *args, **kwargs)

 "/usr/share/w3af/w3af/core/data/kb/knowledge_base.py", line 652, in add_url
return self.urls.add(url)AttributeError: 'DBKnowledgeBase' object has no attribute 'urls'
Traceback (most recent call last):

 "/usr/bin/certbot", line 9, in <module>
load_entry_point('certbot==0.10.0.dev0', 'console_scripts', 'certbot')()

 "/usr/lib64/python2.7/site-packages/pkg_resources/__init__.py", line 542, in load_entry_point
return get_distribution(dist).load_entry_point(group, name)

 "/usr/lib64/python2.7/site-packages/pkg_resources/__init__.py", line 2569, in load_entry_point
return ep.load()

 "/usr/lib64/python2.7/site-packages/pkg_resources/__init__.py", line 2229, in load
return self.resolve()

 "/usr/lib64/python2.7/site-packages/pkg_resources/__init__.py", line 2235, in resolve
module = __import__(self.module_name, fromlist=['__name__'], level=0)

 "/usr/lib64/python2.7/site-packages/certbot/main.py", line 14, in <module>
from acme import jose

 "/usr/lib64/python2.7/site-packages/acme/jose/__init__.py", line 37, in <module>
from acme.jose.interfaces import JSONDeSerializable

 "/usr/lib64/python2.7/site-packages/acme/jose/interfaces.py", line 9, in <module>
from acme.jose import util

 "/usr/lib64/python2.7/site-packages/acme/jose/util.py", line 5, in <module>
import OpenSSL

 "/usr/lib64/python2.7/site-packages/OpenSSL/__init__.py", line 8, in <module>
from OpenSSL import rand, crypto, SSLImportError: /usr/lib64/python2.7/site-packages/OpenSSL/crypto.so: undefined symbol: PyUnicodeUCS2_Decode