我正在学习Django几个月。目前，我正在进行一个有关教师的演示项目。工作了几天后，我受不了编程知识的限制。突然我发现控制台上出现错误（ AttributeError：'NoneType'对象没有属性'split'），但是我不知道它何时发生。尽管我的网站在开发服务器上运行得很好，但是此问题也在后台运行。我在Ubuntu 18.04上使用Django 2.2.4 python 3.6和Postgresql 11.0。你们能帮我摆脱这个问题吗？预先感谢！
我已经在网上搜索了解决方案，但找不到任何合适的解决方案。请大家检查下面的错误。
python manage.py runserver
Watching for file changes with StatReloader
Performing system checks...
System check identified no issues (0 silenced).
September 04, 2019 - 16:28:55
Django version 2.2.4, using settings 'teacher_project.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CONTROL-C.
[04/Sep/2019 16:31:05] "GET / HTTP/1.1" 200 6092
[04/Sep/2019 16:31:05] "GET /static/css/all_pass.css HTTP/1.1" 200 17
[04/Sep/2019 16:31:05] "GET /static/css/style.css HTTP/1.1" 200 12488
[04/Sep/2019 16:31:05] "GET /static/css/navbar.css HTTP/1.1" 200 567
[04/Sep/2019 16:31:05] "GET /static/css/font.css HTTP/1.1" 200 5483
[04/Sep/2019 16:31:05] "GET /static/img/headshot.jpg HTTP/1.1" 200 27864
[04/Sep/2019 16:31:06] "GET /static/font/SolaimanLipi.woff HTTP/1.1" 200 96104
Not Found: /favicon.ico
[04/Sep/2019 16:31:06] "GET /favicon.ico HTTP/1.1" 404 2509
[04/Sep/2019 16:31:21] "GET /media/videos/2019/09/03/Introduction_to_Calculus_1_of_2-_Seeing_the_big_picture.mp4 HTTP/1.1" 200 11124736
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 180, in finish_response
self.write(data)
File "/usr/lib/python3.6/wsgiref/handlers.py", line 279, in write
self._write(data)
File "/usr/lib/python3.6/wsgiref/handlers.py", line 453, in _write
result = self.stdout.write(data)
File "/usr/lib/python3.6/socketserver.py", line 803, in write
self._sock.sendall(b)
ConnectionResetError: [Errno 104] Connection reset by peer
[04/Sep/2019 16:31:21] "GET /media/videos/2019/09/03/Introduction_to_Calculus_1_of_2-_Seeing_the_big_picture.mp4 HTTP/1.1" 500 59
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 49666)
[04/Sep/2019 16:31:21] "GET /media/videos/2019/09/03/Addition_of_Numbers_with_Carrying_-_Maths_For_Class_2_-_Maths_Basics_F_DvzezAP.mp4 HTTP/1.1" 200 10665984
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 180, in finish_response
self.write(data)
File "/usr/lib/python3.6/wsgiref/handlers.py", line 279, in write
self._write(data)
File "/usr/lib/python3.6/wsgiref/handlers.py", line 453, in _write
result = self.stdout.write(data)
File "/usr/lib/python3.6/socketserver.py", line 803, in write
self._sock.sendall(b)
ConnectionResetError: [Errno 104] Connection reset by peer
[04/Sep/2019 16:31:21] "GET /media/videos/2019/09/03/Addition_of_Numbers_with_Carrying_-_Maths_For_Class_2_-_Maths_Basics_F_DvzezAP.mp4 HTTP/1.1" 500 59
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 49664)
Traceback (most recent call last):
File "/usr/lib/python3.6/wsgiref/handlers.py", line 138, in run
self.finish_response()
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 180, in finish_response
self.write(data)
File "/usr/lib/python3.6/wsgiref/handlers.py", line 279, in write
self._write(data)
File "/usr/lib/python3.6/wsgiref/handlers.py", line 453, in _write
result = self.stdout.write(data)
File "/usr/lib/python3.6/socketserver.py", line 803, in write
self._sock.sendall(b)
ConnectionResetError: [Errno 104] Connection reset by peer
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/coduser/Desktop/teacher/myvenv/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'
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 279, in write
self._write(data)
[04/Sep/2019 16:31:21] "GET /media/videos/2019/09/03/Algebra_Basics-_What_Is_Algebra_-_Math_Antics.mp4 HTTP/1.1" 200 11190272
TypeError: 'NoneType' object is not subscriptable
File "/usr/lib/python3.6/wsgiref/handlers.py", line 453, in _write
result = self.stdout.write(data)
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3.6/socketserver.py", line 803, in write
self._sock.sendall(b)
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/coduser/Desktop/teacher/myvenv/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 171, in handle
self.handle_one_request()
File "/home/coduser/Desktop/teacher/myvenv/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 "/usr/lib/python3.6/wsgiref/handlers.py", line 138, in run
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 279, in write
self._write(data)
ConnectionResetError: [Errno 104] Connection reset by peer
File "/home/coduser/Desktop/teacher/myvenv/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
During handling of the above exception, another exception occurred:
File "/usr/lib/python3.6/wsgiref/handlers.py", line 453, in _write
result = self.stdout.write(data)
AttributeError: 'NoneType' object has no attribute 'split'
Traceback (most recent call last):
----------------------------------------
File "/usr/lib/python3.6/socketserver.py", line 803, in write
self._sock.sendall(b)
ConnectionResetError: [Errno 104] Connection reset by peer
[04/Sep/2019 16:31:21] "GET /media/videos/2019/09/03/Algebra_Basics-_What_Is_Algebra_-_Math_Antics.mp4 HTTP/1.1" 500 59
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 49658)
File "/usr/lib/python3.6/wsgiref/handlers.py", line 141, in run
self.handle_error()
Traceback (most recent call last):
File "/home/coduser/Desktop/teacher/myvenv/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 138, in run
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 279, in write
self._write(data)
File "/usr/lib/python3.6/wsgiref/handlers.py", line 453, in _write
result = self.stdout.write(data)
File "/usr/lib/python3.6/socketserver.py", line 803, in write
self._sock.sendall(b)
File "/usr/lib/python3.6/wsgiref/handlers.py", line 368, in handle_error
self.finish_response()
ConnectionResetError: [Errno 104] Connection reset by peer
File "/usr/lib/python3.6/wsgiref/handlers.py", line 180, in finish_response
self.write(data)
During handling of the above exception, another exception occurred:
File "/usr/lib/python3.6/wsgiref/handlers.py", line 274, in write
self.send_headers()
Traceback (most recent call last):
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 141, in run
self.handle_error()
File "/usr/lib/python3.6/wsgiref/handlers.py", line 344, in client_is_modern
return self.environ['SERVER_PROTOCOL'].upper() != 'HTTP/0.9'
File "/home/coduser/Desktop/teacher/myvenv/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 116, in handle_error
super().handle_error()
TypeError: 'NoneType' object is not subscriptable
File "/usr/lib/python3.6/wsgiref/handlers.py", line 368, in handle_error
self.finish_response()
During handling of the above exception, another exception occurred:
File "/usr/lib/python3.6/wsgiref/handlers.py", line 180, in finish_response
self.write(data)
Traceback (most recent call last):
File "/usr/lib/python3.6/wsgiref/handlers.py", line 274, in write
self.send_headers()
File "/usr/lib/python3.6/socketserver.py", line 654, in process_request_thread
self.finish_request(request, client_address)
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/socketserver.py", line 364, in finish_request
self.RequestHandlerClass(request, client_address, self)
File "/usr/lib/python3.6/wsgiref/handlers.py", line 344, in client_is_modern
return self.environ['SERVER_PROTOCOL'].upper() != 'HTTP/0.9'
File "/usr/lib/python3.6/socketserver.py", line 724, in __init__
self.handle()
TypeError: 'NoneType' object is not subscriptable
File "/home/coduser/Desktop/teacher/myvenv/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 171, in handle
self.handle_one_request()
During handling of the above exception, another exception occurred:
File "/home/coduser/Desktop/teacher/myvenv/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 194, in handle_one_request
handler.run(self.server.get_app())
Traceback (most recent call last):
File "/usr/lib/python3.6/wsgiref/handlers.py", line 144, in run
self.close()
File "/usr/lib/python3.6/socketserver.py", line 654, in process_request_thread
self.finish_request(request, client_address)
File "/home/coduser/Desktop/teacher/myvenv/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'
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/coduser/Desktop/teacher/myvenv/lib/python3.6/site-packages/django/core/servers/basehttp.py", line 171, in handle
self.handle_one_request()
File "/home/coduser/Desktop/teacher/myvenv/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/coduser/Desktop/teacher/myvenv/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'
----------------------------------------
嵌入式视频的HTML代码
{% extends 'base.html' %}
{% load static %}
{% block content %}
<a class="skip-link screen-reader-text" href="#content">Skip to content</a>
<!-- <div class="badge"></div> -->
<main id="content" class="main-area">
{% for post in posts %}
<section class="main-content">
<div class="teacher-student">
<div class="teacher">
<img src="{% static 'img/headshot.jpg' %}" alt="">
<!-- <p>TEACHER</p> -->
<a href="user_profile.html">{{ post.author.get_full_name }}</a>
<small>{{ post.publish }}</small>
</div>
<div class="available">
{% if post.is_available %}
<a href="#">Teacher Available</a>
{% endif %}
</div>
</div>
<div class="main-article">
<a href="detail.html">
<h1>{{ post.title }}</h1>
</a>
<video playsinline oncontextmenu="return false;" controls preload="metadata" controlsList="nodownload"
disablePictureInPicture src="{{ post.clip.url}}" type='video/mp4'>
</video>
<article>
<p>
Lorem ipsum dolor sit amet consectetur, adipisicing elit. Asperiores magni eveniet
praesentium esse molestias iusto doloremque ducimus nobis ex hic. Natus, ipsum...
</p>
</article>
<div class="total-like-share">
<p class="like"><span>Like 400</span></p>
<p class="share"><span>Comments 4000</span></p>
</div>
</div>
</section>
{% endfor %}
</main>
<!-- Left Side Bar -->
<aside class="sidebar-left">
<div class="left-sidebar">
<h2 class="left-sidebar-title">Result Board</h2>
<div class="updates-contens">
<p><a href="#">Recent Results</a></p>
<p><a href="#">Old Results</a></p>
</div>
</div>
</aside>
<!-- Right Side Bar -->
<aside class="sidebar-right">
<div class="right-sidebar">
<h2 class="right-sidebar-title">Post Updates</h2>
<div class="updates-contens">
<p><a href="#">Latest Posts</a></p>
<p><a href="#">Most comented posts</a></p>
<p><a href="#">Most shared posts</a></p>
</div>
</div>
</aside>
{% endblock content %}