error when i want to show options

[emans841]

show_options
Traceback (most recent call last):
File "operative.py", line 8, in
operative.user_put()
File "/root/Desktop/operative-framework/core/operative.py", line 53, in user_put
mecanic.load(user_input)
File "/root/Desktop/operative-framework/core/mecanic.py", line 21, in load
load_module(name)
File "/root/Desktop/operative-framework/core/mecanic.py", line 135, in load_module
use_module(module)
File "/root/Desktop/operative-framework/core/mecanic.py", line 55, in use_module
mod = import(module_path, fromlist=['module_element'])
File "/root/Desktop/operative-framework/core/modules/reverse_ipdomain.py", line 5, in
from core import load
File "/root/Desktop/operative-framework/core/load.py", line 7, in
from bs4 import BeautifulSoup
File "/usr/local/lib/python2.7/dist-packages/bs4/init.py", line 30, in
from .builder import builder_registry, ParserRejectedMarkup
File "/usr/local/lib/python2.7/dist-packages/bs4/builder/init.py", line 314, in
from . import _html5lib
File "/usr/local/lib/python2.7/dist-packages/bs4/builder/_html5lib.py", line 70, in
class TreeBuilderForHtml5lib(html5lib.treebuilders._base.TreeBuilder):
AttributeError: 'module' object has no attribute '_base'
root@kali:~/Desktop/operative-framework#