FileNotFoundError: [Errno 2] No such file or directory: '/usr/local/lib/python3.8/site-packages/html5css3/thirdparty/revealjs/css/theme/league.css'

*COMMAND:* rst2html5 --jquery --reveal-js --pretty-print-code --traceback
fortune.rst >deck1.html && o deck1.html

*Traceback* (most recent call last):
  File "/usr/local/bin/rst2html5", line 11, in <module>
    load_entry_point('rst2html5-tools==0.5.3', 'console_scripts',
'rst2html5')()
  File "/usr/local/lib/python3.8/site-packages/html5css3/main.py", line 32,
in main
    publish_cmdline(writer_name='html5', writer=html5css3.Writer(),
  File "/home/patrick/.local/lib/python3.8/site-packages/docutils/core.py",
line 353, in publish_cmdline
    output = pub.publish(
  File "/home/patrick/.local/lib/python3.8/site-packages/docutils/core.py",
line 220, in publish
    output = self.writer.write(self.document, self.destination)
  File
"/home/patrick/.local/lib/python3.8/site-packages/docutils/writers/__init__.py",
line 78, in write
    self.translate()
  File "/usr/local/lib/python3.8/site-packages/html5css3/__init__.py", line
257, in translate
    processor(tree, embed, params)
  File
"/usr/local/lib/python3.8/site-packages/html5css3/postprocessors.py", line
156, in revealjs
    head.append(css(theme_path, embed))
  File
"/usr/local/lib/python3.8/site-packages/html5css3/postprocessors.py", line
48, in css
    content = read_file(abspath(path))
  File
"/usr/local/lib/python3.8/site-packages/html5css3/postprocessors.py", line
21, in read_file
    return open(path).read()
FileNotFoundError: [Errno 2] No such file or directory:
'/usr/local/lib/python3.8/site-packages/html5css3/thirdparty/revealjs/css/theme/league.css'


*Docutils version (0.16 [release]),Python version (3.8.1)*
*Ubuntu Linux 18.04.3*