第三方RestAPI提供了服務器日志文件，此刻我們正在使用curl命令下載日志文件，例如curl -H "X-Auth-Token: XXXXXXXXXXXXXXXXXXXXXXXXXX" https://host_address/api/v3.0/admin/logs -o logs.zip但是我正在嘗試使用Flask / Python創建簡單的儀表板，這是我的路線的Python / Flask代碼：@app.route('/download/server/logs')def download_log():    import requests    from flask import send_file    res = requests.get('http://<rest_api_host>/v1.2/admin/logs', stream=True)    return send_file(        res.content,        attachment_filename='console_log.zip',        mimetype='application/zip'    )但是，當我從瀏覽器中訪問該網址時，出現以下錯誤，Traceback (most recent call last):.........  File "/Users/admin/Documents/project/__init__.py", line 940, in download_console_logs    res.content,  File "/Users/admin/Documents/project/venv3/lib/python3.6/site-packages/requests/models.py", line 823, in content    self._content = bytes().join(self.iter_content(CONTENT_CHUNK_SIZE)) or bytes()  File "/Users/admin/Documents/project/venv3/lib/python3.6/site-packages/requests/models.py", line 745, in generate    for chunk in self.raw.stream(chunk_size, decode_content=True):  File "/Users/admin/Documents/project/venv3/lib/python3.6/site-packages/urllib3/response.py", line 436, in stream    data = self.read(amt=amt, decode_content=decode_content)  File "/Users/admin/Documents/project/venv3/lib/python3.6/site-packages/urllib3/response.py", line 384, in read    data = self._fp.read(amt)  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py", line 449, in read    n = self.readinto(b)  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py", line 497, in readinto    self._close_conn()  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py", line 403, in _close_conn    fp.close()AttributeError: 'NoneType' object has no attribute 'close'我使用PyCharm放置了斷點/調試器，并能夠看到其中res.content包含二進制數據，但是我無法弄清楚這里出了什么問題。這是簡單的圖表，解釋了我要做什么，