Senden von E-Mails mit Anhang, aber der Anhang wird nicht gesendet, sondern nur der Text wird gesendet

Ich sende eine E-Mail mit PDF in meiner Bewerbung, kann aber auf der Empfängerseite nur den Text empfangen, nicht den Anhang

Dies ist der Fehler, den ich beim Ausführen des Skripts erhalten habe, aber die E-Mail wird gesendet

Traceback (most recent call last):
  File "C:\Users\vineet\AppData\Local\Programs\Python\Python37\lib\wsgiref\handlers.py", line 138, in run
    self.finish_response()
  File "C:\Users\vineet\AppData\Local\Programs\Python\Python37\lib\wsgiref\handlers.py", line 180, in finish_response
    self.write(data)
  File "C:\Users\vineet\AppData\Local\Programs\Python\Python37\lib\wsgiref\handlers.py", line 274, in write
    self.send_headers()
  File "C:\Users\vineet\AppData\Local\Programs\Python\Python37\lib\wsgiref\handlers.py", line 332, in send_headers
    self.send_preamble()
  File "C:\Users\vineet\AppData\Local\Programs\Python\Python37\lib\wsgiref\handlers.py", line 255, in send_preamble
    ('Date: %s\r\n' % format_date_time(time.time())).encode('iso-8859-1')
  File "C:\Users\vineet\AppData\Local\Programs\Python\Python37\lib\wsgiref\handlers.py", line 453, in _write
    result = self.stdout.write(data)
  File "C:\Users\vineet\AppData\Local\Programs\Python\Python37\lib\socketserver.py", line 799, in write
    self._sock.sendall(b)
ConnectionAbortedError: [WinError 10053] An established connection was aborted by the software in your host machine

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\vineet\AppData\Local\Programs\Python\Python37\lib\wsgiref\handlers.py", line 141, in run
    self.handle_error()
  File "C:\Result Creater\virtual\lib\site-packages\django\core\servers\basehttp.py", line 116, in handle_error
    super().handle_error()
  File "C:\Users\vineet\AppData\Local\Programs\Python\Python37\lib\wsgiref\handlers.py", line 368, in handle_error
    self.finish_response()
  File "C:\Users\vineet\AppData\Local\Programs\Python\Python37\lib\wsgiref\handlers.py", line 180, in finish_response
    self.write(data)
  File "C:\Users\vineet\AppData\Local\Programs\Python\Python37\lib\wsgiref\handlers.py", line 274, in write
    self.send_headers()
  File "C:\Users\vineet\AppData\Local\Programs\Python\Python37\lib\wsgiref\handlers.py", line 331, in send_headers
    if not self.origin_server or self.client_is_modern():
  File "C:\Users\vineet\AppData\Local\Programs\Python\Python37\lib\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 "C:\Users\vineet\AppData\Local\Programs\Python\Python37\lib\socketserver.py", line 650, in process_request_thread
    self.finish_request(request, client_address)
  File "C:\Users\vineet\AppData\Local\Programs\Python\Python37\lib\socketserver.py", line 360, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "C:\Users\vineet\AppData\Local\Programs\Python\Python37\lib\socketserver.py", line 720, in __init__
    self.handle()
  File "C:\Result Creater\virtual\lib\site-packages\django\core\servers\basehttp.py", line 171, in handle
    self.handle_one_request()
  File "C:\Result Creater\virtual\lib\site-packages\django\core\servers\basehttp.py", line 194, in handle_one_request
    handler.run(self.server.get_app())
  File "C:\Users\vineet\AppData\Local\Programs\Python\Python37\lib\wsgiref\handlers.py", line 144, in run
    self.close()
  File "C:\Result Creater\virtual\lib\site-packages\django\core\servers\basehttp.py", line 111, in close
    super().close()
  File "C:\Users\vineet\AppData\Local\Programs\Python\Python37\lib\wsgiref\simple_server.py", line 35, in close
    self.status.split(' ',1)[0], self.bytes_sent
AttributeError: 'NoneType' object has no attribute 'split'

Meine Sende-E-Mail-Funktion-

def send_email(request):
    subject='Mark Sheet'
    message='You requested for your Marksheet'
    email_from=settings.EMAIL_HOST_USER
    recipient_list=[request.user.email]
    email=EmailMessage(subject,message,email_from,recipient_list,
        headers={'Reply- To':settings.EMAIL_HOST_USER})
    file=str(request.user)+'.pdf'
    email.attach_file=(f"/store/{file}")
    email.send()
    return redirect('home')

Meine PDF-Klasse zum Erstellen von PDF

class Pdf(View):

def get(self,request):
    marks=Marks.objects.filter(user_name=request.user).first()
    today=timezone.now()
    params={
        'today':today,
        'marks':marks,
        'request':request
    }
    file=Render.render_to_file('user/pdf.html',params)
    return redirect('send_email')