CSVアップロード機能の実装で、read_csvが２回以上使えない。

前提

pythonのflaskでCSVアップロード機能を実装しております。

実現したいこと

送られてきたCSVをファイルをpd.read_csvで２回読み込みたいのですが、なぜか一回目のread_csvは通って、２回目のread_csvでエラーが出ます。
フロントエンドから送られてきたcsv_dataは一度read_csvすると中身がなくなるということはあるのでしょうか？

python
1def upload():
2    csv_data = request.files['file']
3    df = pd.read_csv(csv_data,skiprows=[0,1,2,3,4],encoding="cp932",engine="python")
4    print(df)
5    df = pd.read_csv(csv_data,skiprows=[0,1,2,3,4],encoding="cp932",engine="python")
6    print(df)

発生している問題・エラーメッセージ

python
1Traceback (most recent call last):
2  File "/usr/local/lib64/python3.7/site-packages/pandas/io/parsers/python_parser.py", line 376, in _infer_columns
3    line = self._buffered_line()
4  File "/usr/local/lib64/python3.7/site-packages/pandas/io/parsers/python_parser.py", line 584, in _buffered_line
5    return self._next_line()
6  File "/usr/local/lib64/python3.7/site-packages/pandas/io/parsers/python_parser.py", line 678, in _next_line
7    next(self.data)
8StopIteration
9
10The above exception was the direct cause of the following exception:
11
12Traceback (most recent call last):
13  File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 2088, in __call__
14    return self.wsgi_app(environ, start_response)
15  File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 2073, in wsgi_app
16    response = self.handle_exception(e)
17  File "/usr/local/lib/python3.7/site-packages/flask_cors/extension.py", line 165, in wrapped_function
18    return cors_after_request(app.make_response(f(*args, **kwargs)))
19  File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 2070, in wsgi_app
20    response = self.full_dispatch_request()
21  File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 1515, in full_dispatch_request
22    rv = self.handle_user_exception(e)
23  File "/usr/local/lib/python3.7/site-packages/flask_cors/extension.py", line 165, in wrapped_function
24    return cors_after_request(app.make_response(f(*args, **kwargs)))
25  File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 1513, in full_dispatch_request
26    rv = self.dispatch_request()
27  File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 1499, in dispatch_request
28    return self.ensure_sync(self.view_functions[rule.endpoint])(**req.view_args)
29  File "./api/views/csv_upload.py", line 30, in upload
30    df = pd.read_csv(csv_data,skiprows=[0,1,2,3,4],encoding="cp932",engine="python")
31  File "/usr/local/lib64/python3.7/site-packages/pandas/util/_decorators.py", line 311, in wrapper
32    return func(*args, **kwargs)
33  File "/usr/local/lib64/python3.7/site-packages/pandas/io/parsers/readers.py", line 586, in read_csv
34    return _read(filepath_or_buffer, kwds)
35  File "/usr/local/lib64/python3.7/site-packages/pandas/io/parsers/readers.py", line 482, in _read
36    parser = TextFileReader(filepath_or_buffer, **kwds)
37  File "/usr/local/lib64/python3.7/site-packages/pandas/io/parsers/readers.py", line 811, in __init__
38    self._engine = self._make_engine(self.engine)
39  File "/usr/local/lib64/python3.7/site-packages/pandas/io/parsers/readers.py", line 1040, in _make_engine
40    return mapping[engine](self.f, **self.options)  # type: ignore[call-arg]
41  File "/usr/local/lib64/python3.7/site-packages/pandas/io/parsers/python_parser.py", line 113, in __init__
42    ) = self._infer_columns()
43  File "/usr/local/lib64/python3.7/site-packages/pandas/io/parsers/python_parser.py", line 398, in _infer_columns
44    raise EmptyDataError("No columns to parse from file") from err
45pandas.errors.EmptyDataError: No columns to parse from file