type object 'HTMLAwareEntitySubstitution' has no attribute 'preserve_whitespace_tags'

[OlgaGKononova]

Hello.
I have installed ChemDataExtractor with pip.
Now trying to use it in jupyter notebook with python3.5, calling import chemdataextractor.
Getting the following error:
AttributeError Traceback (most recent call last)
in ()
----> 1 import chemdataextractor

/usr/local/lib/python3.5/dist-packages/chemdataextractor/init.py in ()
24
25
---> 26 from .doc.document import Document

/usr/local/lib/python3.5/dist-packages/chemdataextractor/doc/init.py in ()
13 from future import unicode_literals
14
---> 15 from .document import Document
16 from .text import Text, Title, Heading, Paragraph, Footnote, Citation, Caption, Sentence, Span, Token
17 from .figure import Figure

/usr/local/lib/python3.5/dist-packages/chemdataextractor/doc/document.py in ()
22
23 from ..utils import python_2_unicode_compatible
---> 24 from .text import Paragraph, Citation, Footnote, Heading, Title
25 from .table import Table
26 from .figure import Figure

/usr/local/lib/python3.5/dist-packages/chemdataextractor/doc/text.py in ()
20
21 from ..model import ModelList
---> 22 from ..parse.context import ContextParser
23 from ..parse.cem import ChemicalLabelParser, CompoundHeadingParser, CompoundParser, chemical_name
24 from ..parse.table import CaptionContextParser

/usr/local/lib/python3.5/dist-packages/chemdataextractor/parse/init.py in ()
13 from future import unicode_literals
14
---> 15 from .actions import join, merge, strip_stop, fix_whitespace
16 from .elements import W, I, R, T, H
17 from .elements import Any, Word, Tag, IWord, Regex, Start, End, Hide, Not

/usr/local/lib/python3.5/dist-packages/chemdataextractor/parse/actions.py in ()
18 from lxml.etree import strip_tags
19
---> 20 from ..text import HYPHENS
21
22

/usr/local/lib/python3.5/dist-packages/chemdataextractor/text/init.py in ()
15 import unicodedata
16
---> 17 from bs4 import UnicodeDammit
18
19

/usr/local/lib/python3.5/dist-packages/bs4/init.py in ()
33 import warnings
34
---> 35 from .builder import builder_registry, ParserRejectedMarkup
36 from .dammit import UnicodeDammit
37 from .element import (

/usr/local/lib/python3.5/dist-packages/bs4/builder/init.py in ()
226
227
--> 228 class HTMLTreeBuilder(TreeBuilder):
229 """This TreeBuilder knows facts about HTML.
230

/usr/local/lib/python3.5/dist-packages/bs4/builder/init.py in HTMLTreeBuilder()
232 """
233
--> 234 preserve_whitespace_tags = HTMLAwareEntitySubstitution.preserve_whitespace_tags
235 empty_element_tags = set([
236 # These are from HTML5.

AttributeError: type object 'HTMLAwareEntitySubstitution' has no attribute 'preserve_whitespace_tags'

Is there a way to fix it?
I tried to apply solutions regarding to BeautifulSoup4 installations, suggested elsewhere, but nothing works.
Thank you!