为什么我不断收到此错误?我尝试了不同版本的 anaconda 3 但没能完成。我应该安装什么才能正常工作?我使用 sklearn 版本 0.20 - 0.23。

import pandas as pd
import matplotlib.pyplot as plt
import plotly.express as px
from sklearn.feature_extraction.text import CountVectorizer
from collections import Counter
from wordcloud import WordCloud
vectorizer = CountVectorizer(ngram_range=(2,2), analyzer='word')
sparse_matrix = vectorizer.fit_transform(df['content'][:2000])
frequencies = sum(sparse_matrix).toarray()[0]
ngrams = pd.DataFrame(frequencies, index=vectorizer.get_feature_names_out(), columns=['frequency'])
ngrams = ngrams.sort_values(by='frequency', ascending=False)
ngrams
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