Python 尝试下载pdf文件时崩溃_Python_Django

Python 尝试下载pdf文件时崩溃

python django

Python 尝试下载pdf文件时崩溃,python,django,Python,Django,它正在开发django 1.8和python 2.7 当我将库和应用程序升级到django 2.2和python 3.6.8时我得到下面的错误。它在库中，而不是我的代码中值得注意的是，我将导入从django.core.servers.basehttp导入FileWrapper更改为wsgiref.util导入FileWrapper [08/Jan/2020 16:46:33] "GET /policy/download/ HTTP/1.1" 200 0 Traceback (most rec

它正在开发django 1.8和python 2.7 当我将库和应用程序升级到django 2.2和python 3.6.8时我得到下面的错误。它在库中，而不是我的代码中值得注意的是，我将导入从django.core.servers.basehttp导入FileWrapper更改为wsgiref.util导入FileWrapper

[08/Jan/2020 16:46:33] "GET /policy/download/ HTTP/1.1" 200 0
Traceback (most recent call last):
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 138, in run
    self.finish_response()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 179, in finish_response
    for data in self.result:
  File "/usr/lib/python3.6/wsgiref/util.py", line 30, in __next__
    data = self.filelike.read(self.blksize)
  File "/usr/lib/python3.6/codecs.py", line 321, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xb5 in position 11: invalid start byte
[08/Jan/2020 16:46:33] "GET /policy/download/ HTTP/1.1" 500 59
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 33210)
Traceback (most recent call last):
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 138, in run
    self.finish_response()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 179, in finish_response
    for data in self.result:
  File "/usr/lib/python3.6/wsgiref/util.py", line 30, in __next__
    data = self.filelike.read(self.blksize)
  File "/usr/lib/python3.6/codecs.py", line 321, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xb5 in position 11: invalid start byte

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 141, in run
    self.handle_error()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 116, in handle_error
    super().handle_error()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 368, in handle_error
    self.finish_response()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 180, in finish_response
    self.write(data)
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 274, in write
    self.send_headers()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 331, in send_headers
    if not self.origin_server or self.client_is_modern():
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 344, in client_is_modern
    return self.environ['SERVER_PROTOCOL'].upper() != 'HTTP/0.9'
TypeError: 'NoneType' object is not subscriptable

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.6/socketserver.py", line 654, in process_request_thread
    self.finish_request(request, client_address)
  File "/usr/lib/python3.6/socketserver.py", line 364, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "/usr/lib/python3.6/socketserver.py", line 724, in __init__
    self.handle()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 169, in handle
    self.handle_one_request()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 194, in handle_one_request
    handler.run(self.server.get_app())
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 144, in run
    self.close()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 111, in close
    super().close()
  File "/usr/lib/python3.6/wsgiref/simple_server.py", line 35, in close
    self.status.split(' ',1)[0], self.bytes_sent
AttributeError: 'NoneType' object has no attribute 'split'
----------------------------------------
Policy matching query does not exist.
[08/Jan/2020 16:46:33] "GET /policy/download/ HTTP/1.1" 200 0
Traceback (most recent call last):
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 138, in run
    self.finish_response()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 179, in finish_response
    for data in self.result:
  File "/usr/lib/python3.6/wsgiref/util.py", line 30, in __next__
    data = self.filelike.read(self.blksize)
  File "/usr/lib/python3.6/codecs.py", line 321, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xb5 in position 11: invalid start byte
[08/Jan/2020 16:46:33] "GET /policy/download/ HTTP/1.1" 500 59
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 33214)
Traceback (most recent call last):
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 138, in run
    self.finish_response()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 179, in finish_response
    for data in self.result:
  File "/usr/lib/python3.6/wsgiref/util.py", line 30, in __next__
    data = self.filelike.read(self.blksize)
  File "/usr/lib/python3.6/codecs.py", line 321, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xb5 in position 11: invalid start byte

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 141, in run
    self.handle_error()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 116, in handle_error
    super().handle_error()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 368, in handle_error
    self.finish_response()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 180, in finish_response
    self.write(data)
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 274, in write
    self.send_headers()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 331, in send_headers
    if not self.origin_server or self.client_is_modern():
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 344, in client_is_modern
    return self.environ['SERVER_PROTOCOL'].upper() != 'HTTP/0.9'
TypeError: 'NoneType' object is not subscriptable

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.6/socketserver.py", line 654, in process_request_thread
    self.finish_request(request, client_address)
  File "/usr/lib/python3.6/socketserver.py", line 364, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "/usr/lib/python3.6/socketserver.py", line 724, in __init__
    self.handle()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 169, in handle
    self.handle_one_request()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 194, in handle_one_request
    handler.run(self.server.get_app())
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 144, in run
    self.close()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 111, in close
    super().close()
  File "/usr/lib/python3.6/wsgiref/simple_server.py", line 35, in close
    self.status.split(' ',1)[0], self.bytes_sent
AttributeError: 'NoneType' object has no attribute 'split'
----------------------------------------
Policy matching query does not exist.
[08/Jan/2020 16:46:33] "GET /policy/download/ HTTP/1.1" 200 0
Traceback (most recent call last):
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 138, in run
    self.finish_response()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 179, in finish_response
    for data in self.result:
  File "/usr/lib/python3.6/wsgiref/util.py", line 30, in __next__
    data = self.filelike.read(self.blksize)
  File "/usr/lib/python3.6/codecs.py", line 321, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xb5 in position 11: invalid start byte
[08/Jan/2020 16:46:33] "GET /policy/download/ HTTP/1.1" 500 59
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 33218)
Traceback (most recent call last):
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 138, in run
    self.finish_response()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 179, in finish_response
    for data in self.result:
  File "/usr/lib/python3.6/wsgiref/util.py", line 30, in __next__
    data = self.filelike.read(self.blksize)
  File "/usr/lib/python3.6/codecs.py", line 321, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xb5 in position 11: invalid start byte

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 141, in run
    self.handle_error()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 116, in handle_error
    super().handle_error()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 368, in handle_error
    self.finish_response()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 180, in finish_response
    self.write(data)
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 274, in write
    self.send_headers()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 331, in send_headers
    if not self.origin_server or self.client_is_modern():
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 344, in client_is_modern
    return self.environ['SERVER_PROTOCOL'].upper() != 'HTTP/0.9'
TypeError: 'NoneType' object is not subscriptable

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.6/socketserver.py", line 654, in process_request_thread
    self.finish_request(request, client_address)
  File "/usr/lib/python3.6/socketserver.py", line 364, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "/usr/lib/python3.6/socketserver.py", line 724, in __init__
    self.handle()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 169, in handle
    self.handle_one_request()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 194, in handle_one_request
    handler.run(self.server.get_app())
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 144, in run
    self.close()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 111, in close
    super().close()
  File "/usr/lib/python3.6/wsgiref/simple_server.py", line 35, in close
    self.status.split(' ',1)[0], self.bytes_sent
AttributeError: 'NoneType' object has no attribute 'split'
----------------------------------------
Policy matching query does not exist.
[08/Jan/2020 16:46:33] "GET /policy/download/ HTTP/1.1" 200 0
Traceback (most recent call last):
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 138, in run
    self.finish_response()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 179, in finish_response
    for data in self.result:
  File "/usr/lib/python3.6/wsgiref/util.py", line 30, in __next__
    data = self.filelike.read(self.blksize)
  File "/usr/lib/python3.6/codecs.py", line 321, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xb5 in position 11: invalid start byte
[08/Jan/2020 16:46:33] "GET /policy/download/ HTTP/1.1" 500 59
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 33222)
Traceback (most recent call last):
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 138, in run
    self.finish_response()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 179, in finish_response
    for data in self.result:
  File "/usr/lib/python3.6/wsgiref/util.py", line 30, in __next__
    data = self.filelike.read(self.blksize)
  File "/usr/lib/python3.6/codecs.py", line 321, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xb5 in position 11: invalid start byte

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 141, in run
    self.handle_error()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 116, in handle_error
    super().handle_error()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 368, in handle_error
    self.finish_response()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 180, in finish_response
    self.write(data)
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 274, in write
    self.send_headers()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 331, in send_headers
    if not self.origin_server or self.client_is_modern():
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 344, in client_is_modern
    return self.environ['SERVER_PROTOCOL'].upper() != 'HTTP/0.9'
TypeError: 'NoneType' object is not subscriptable

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.6/socketserver.py", line 654, in process_request_thread
    self.finish_request(request, client_address)
  File "/usr/lib/python3.6/socketserver.py", line 364, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "/usr/lib/python3.6/socketserver.py", line 724, in __init__
    self.handle()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 169, in handle
    self.handle_one_request()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 194, in handle_one_request
    handler.run(self.server.get_app())
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 144, in run
    self.close()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 111, in close
    super().close()
  File "/usr/lib/python3.6/wsgiref/simple_server.py", line 35, in close
    self.status.split(' ',1)[0], self.bytes_sent
AttributeError: 'NoneType' object has no attribute 'split'
----------------------------------------
Policy matching query does not exist.
[08/Jan/2020 16:46:33] "GET /policy/download/ HTTP/1.1" 200 0
Traceback (most recent call last):
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 138, in run
    self.finish_response()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 179, in finish_response
    for data in self.result:
  File "/usr/lib/python3.6/wsgiref/util.py", line 30, in __next__
    data = self.filelike.read(self.blksize)
  File "/usr/lib/python3.6/codecs.py", line 321, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xb5 in position 11: invalid start byte
[08/Jan/2020 16:46:33] "GET /policy/download/ HTTP/1.1" 500 59
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 33226)
Traceback (most recent call last):
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 138, in run
    self.finish_response()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 179, in finish_response
    for data in self.result:
  File "/usr/lib/python3.6/wsgiref/util.py", line 30, in __next__
    data = self.filelike.read(self.blksize)
  File "/usr/lib/python3.6/codecs.py", line 321, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xb5 in position 11: invalid start byte

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 141, in run
    self.handle_error()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 116, in handle_error
    super().handle_error()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 368, in handle_error
    self.finish_response()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 180, in finish_response
    self.write(data)
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 274, in write
    self.send_headers()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 331, in send_headers
    if not self.origin_server or self.client_is_modern():
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 344, in client_is_modern
    return self.environ['SERVER_PROTOCOL'].upper() != 'HTTP/0.9'
TypeError: 'NoneType' object is not subscriptable

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.6/socketserver.py", line 654, in process_request_thread
    self.finish_request(request, client_address)
  File "/usr/lib/python3.6/socketserver.py", line 364, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "/usr/lib/python3.6/socketserver.py", line 724, in __init__
    self.handle()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 169, in handle
    self.handle_one_request()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 194, in handle_one_request
    handler.run(self.server.get_app())
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 144, in run
    self.close()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 111, in close
    super().close()
  File "/usr/lib/python3.6/wsgiref/simple_server.py", line 35, in close
    self.status.split(' ',1)[0], self.bytes_sent
AttributeError: 'NoneType' object has no attribute 'split'
----------------------------------------
Policy matching query does not exist.
[08/Jan/2020 16:46:33] "GET /policy/download/ HTTP/1.1" 200 0
Traceback (most recent call last):
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 138, in run
    self.finish_response()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 179, in finish_response
    for data in self.result:
  File "/usr/lib/python3.6/wsgiref/util.py", line 30, in __next__
    data = self.filelike.read(self.blksize)
  File "/usr/lib/python3.6/codecs.py", line 321, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xb5 in position 11: invalid start byte
[08/Jan/2020 16:46:33] "GET /policy/download/ HTTP/1.1" 500 59
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 33230)
Traceback (most recent call last):
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 138, in run
    self.finish_response()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 179, in finish_response
    for data in self.result:
  File "/usr/lib/python3.6/wsgiref/util.py", line 30, in __next__
    data = self.filelike.read(self.blksize)
  File "/usr/lib/python3.6/codecs.py", line 321, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xb5 in position 11: invalid start byte

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 141, in run
    self.handle_error()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 116, in handle_error
    super().handle_error()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 368, in handle_error
    self.finish_response()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 180, in finish_response
    self.write(data)
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 274, in write
    self.send_headers()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 331, in send_headers
    if not self.origin_server or self.client_is_modern():
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 344, in client_is_modern
    return self.environ['SERVER_PROTOCOL'].upper() != 'HTTP/0.9'
TypeError: 'NoneType' object is not subscriptable

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.6/socketserver.py", line 654, in process_request_thread
    self.finish_request(request, client_address)
  File "/usr/lib/python3.6/socketserver.py", line 364, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "/usr/lib/python3.6/socketserver.py", line 724, in __init__
    self.handle()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 169, in handle
    self.handle_one_request()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 194, in handle_one_request
    handler.run(self.server.get_app())
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 144, in run
    self.close()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 111, in close
    super().close()
  File "/usr/lib/python3.6/wsgiref/simple_server.py", line 35, in close
    self.status.split(' ',1)[0], self.bytes_sent
AttributeError: 'NoneType' object has no attribute 'split'
----------------------------------------
Policy matching query does not exist.
[08/Jan/2020 16:46:33] "GET /policy/download/ HTTP/1.1" 200 0
Traceback (most recent call last):
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 138, in run
    self.finish_response()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 179, in finish_response
    for data in self.result:
  File "/usr/lib/python3.6/wsgiref/util.py", line 30, in __next__
    data = self.filelike.read(self.blksize)
  File "/usr/lib/python3.6/codecs.py", line 321, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xb5 in position 11: invalid start byte
[08/Jan/2020 16:46:33] "GET /policy/download/ HTTP/1.1" 500 59
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 33234)
Traceback (most recent call last):
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 138, in run
    self.finish_response()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 179, in finish_response
    for data in self.result:
  File "/usr/lib/python3.6/wsgiref/util.py", line 30, in __next__
    data = self.filelike.read(self.blksize)
  File "/usr/lib/python3.6/codecs.py", line 321, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xb5 in position 11: invalid start byte

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 141, in run
    self.handle_error()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 116, in handle_error
    super().handle_error()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 368, in handle_error
    self.finish_response()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 180, in finish_response
    self.write(data)
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 274, in write
    self.send_headers()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 331, in send_headers
    if not self.origin_server or self.client_is_modern():
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 344, in client_is_modern
    return self.environ['SERVER_PROTOCOL'].upper() != 'HTTP/0.9'
TypeError: 'NoneType' object is not subscriptable

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.6/socketserver.py", line 654, in process_request_thread
    self.finish_request(request, client_address)
  File "/usr/lib/python3.6/socketserver.py", line 364, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "/usr/lib/python3.6/socketserver.py", line 724, in __init__
    self.handle()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 169, in handle
    self.handle_one_request()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 194, in handle_one_request
    handler.run(self.server.get_app())
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 144, in run
    self.close()
  File "/home/bsd/.local/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 111, in close
    super().close()
  File "/usr/lib/python3.6/wsgiref/simple_server.py", line 35, in close
    self.status.split(' ',1)[0], self.bytes_sent
AttributeError: 'NoneType' object has no attribute 'split'
----------------------------------------
Policy matching query does not exist.
[08/Jan/2020 16:46:33] "GET /policy/download/ HTTP/1.1" 200 0
Traceback (most recent call last):
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 138, in run
    self.finish_response()
  File "/usr/lib/python3.6/wsgiref/handlers.py", line 179, in finish_response
    for data in self.result:
  File "/usr/lib/python3.6/wsgiref/util.py", line 30, in __next__
    data = self.filelike.read(self.blksize)
  File "/usr/lib/python3.6/codecs.py", line 321, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xb5 in position 11: invalid start byte
[08/Jan/2020 16:46:33] "GET /policy/download/ HTTP/1.1" 500 59
----------------------------------------

视图部分

def download_policy(request):
    the_file = None
    try:
        policy = Policy.objects.get(name="BSD_POLICY")
        the_file = os.path.join(settings.MEDIA_ROOT, str(policy.policy))
    except Exception as e:
        print(e)
        the_file = "base/document-not-found.pdf"

    filename = os.path.basename(the_file)
    chunk_size = 8192
    response = StreamingHttpResponse(FileWrapper(open(the_file), chunk_size),
                                content_type=mimetypes.guess_type(the_file)[0])
    response['Content-Length'] = os.path.getsize(the_file)    
    response['Content-Disposition'] = "attachment; filename=%s" % filename
    log(
        user=request.user, action="FILE_DOWNLOAD_REQUEST", extra={ "file_path":the_file, "file_length":response['Content-Length'] }
    )
    return response



class Policy(models.Model):
    name = models.CharField(max_length=15, default="BSD_POLICY")
    policy = models.FileField(upload_to="policy/")

一般来说，尽量避免同时升级Python和Django。这使得缩小“非类型”对象不可下标的范围变得更加困难。问题的原因是什么。也可以通过Django 1.11 LTS进行升级。如果您需要有关特定问题的帮助，请显示

/policy/download/

URL的视图。发布它……尝试以字节形式打开文件，例如

open（文件'rb'）

。您可以通过使用来简化代码。您还可以粘贴

策略

模型吗？是

policy.policy

FileField

？也发布了这个。一般来说，尽量避免同时升级Python和Django。这使得缩小“非类型”对象不可下标的范围变得更加困难。问题的原因是什么。也可以通过Django 1.11 LTS进行升级。如果您需要有关特定问题的帮助，请显示

/policy/download/

URL的视图。发布它……尝试以字节形式打开文件，例如

open（文件'rb'）

。您可以通过使用来简化代码。您还可以粘贴

策略

模型吗？是

policy.policy

FileField

？也发布了这个。