AttributeError: 'tuple' object has no attribute 'items'

[Jeff-Tian]

➜ chwc
2019-06-04 15:53:54,556   DEBUG [command_history_wordcloud.command_history_wordcloud] stop words file = 'None'
2019-06-04 15:53:54,556    INFO [command_history_wordcloud.command_history_wordcloud] Started command_history_wordcloud.py.
2019-06-04 15:53:54,556   DEBUG [command_history_wordcloud.command_history_wordcloud] user home path  = '/Users/jefftian'
2019-06-04 15:53:54,560   DEBUG [command_history_wordcloud.command_history_wordcloud] shell path = '/bin/zsh'
2019-06-04 15:53:54,560   DEBUG [command_history_wordcloud.command_history_wordcloud] shell name = 'zsh'
2019-06-04 15:53:54,608   DEBUG [command_history_wordcloud.command_history_wordcloud] word frequencies count = 173
2019-06-04 15:53:54,608   DEBUG [command_history_wordcloud.command_history_wordcloud] stop words = set()
Traceback (most recent call last):
  File "/usr/local/bin/chwc", line 10, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.7/site-packages/command_history_wordcloud/command_history_wordcloud.py", line 95, in main
    create_wordcloud(words, stop_words)
  File "/usr/local/lib/python3.7/site-packages/command_history_wordcloud/command_history_wordcloud.py", line 79, in create_wordcloud
    wordcloud = WordCloud(background_color="black", width=900, height=600, stopwords=stop_words).generate_from_frequencies(frequencies)
  File "/usr/local/lib/python3.7/site-packages/wordcloud/wordcloud.py", line 380, in generate_from_frequencies
    frequencies = sorted(frequencies.items(), key=itemgetter(1), reverse=True)
AttributeError: 'tuple' object has no attribute 'items'