Error while runing app.py

[Anmol1602]

I am facing the folowing error Traceback (most recent call last):
File "/content/Plagiarism-checker-Python/app.py", line 14, in
vectors = vectorize(student_notes)
File "/content/Plagiarism-checker-Python/app.py", line 10, in vectorize
def vectorize(Text): return TfidfVectorizer().fit_transform(Text).toarray()
File "/usr/local/lib/python3.10/dist-packages/sklearn/feature_extraction/text.py", line 1846, in fit_transform
X = super().fit_transform(raw_documents)
File "/usr/local/lib/python3.10/dist-packages/sklearn/feature_extraction/text.py", line 1202, in fit_transform
vocabulary, X = self._count_vocab(raw_documents,
File "/usr/local/lib/python3.10/dist-packages/sklearn/feature_extraction/text.py", line 1133, in _count_vocab
raise ValueError("empty vocabulary; perhaps the documents only"
ValueError: empty vocabulary; perhaps the documents only contain stop words