Python Django Errno 54 'Connection reset by peer'

The same behaviour is seen if the favicon is in .png format as opposed to .ico.

Also, contrary to advice seen on other sites, downgrading Python to v3.6 does not solve the problem. screenshot of error w. png favicon

Seems to be a Django issue, It will probably be fixed permanently in a future Django release.

Following https://bugs.python.org/issue27682#msg348302 I made the changes shown:

I then replaced BrokenPipeError with ConnectionAbortedError. This seems to handle the exception.

Update for Django 3: I have the following changes in basehttp.py (rev.1.2.1) to get rid of all the pesky broken pipe error messages:

Line 55: - return issubclass(exc_type, BrokenPipeError)
Line 55: + return issubclass(exc_type, (BrokenPipeError, ConnectionAbortedError, ConnectionResetError))

Line 71: - logger.info("- Broken pipe from %sn", client_address)
Line 71: + pass

I came across the same issue ConnectionResetError: [Errno 54] Connection reset by peer.

In my case the issue was trying to serve static files through development server with debug settings to False, development server can serve static files only when debug is set to True in settings file.

In my settings file i replace

DEBUG = False

with

DEBUG = True

After that, I restart my development server and it works for me!

I also encountered this issue when i switch from development to production.

After i do collectstatic it worked normal again, my guess is it’s missing static dir path for production

do this before you switch to production environment

python manage.py collectstatic

I had the same issue in my project. Maybe this post can help someone.
In my case the problem was I call the function from the button with onclick like this:

<a class="btn btn-warning"  onclick="submitData();">Caption</a>

I changed this to a better way:

<button class="btn btn-warning" id="button-action">Caption</button>

And then handle the click:

document.getElementById('button-action').addEventListener('click', function(e){
    submitData()
})

None of the current answers worked for me. This is how I made the error go away during development on MacOS for Django 3 (untested on other versions).

Create a custom runserver management command in one of your project apps which is only different when DEBUG==True and you are on a Mac. Pay particular attention to Command.get_handler:

#myapp/management/commands/runserver.py


import platform

import django.core.servers.basehttp
from django.conf import settings
from django.contrib.staticfiles.management.commands.runserver import Command as RunserverCommand
from django.core.servers.basehttp import ServerHandler


def handle_one_request(self):
    """
    Exact copy of django.core.servers.WSGIRequestHandler.handle_one_request except it
    Completely ignores "ConnectionResetError: [Errno 54] Connection reset by peer"
    Which seems to be only noise on MacOS.
    """
    try:
        self.raw_requestline = self.rfile.readline(65537)
    except ConnectionResetError:
        return
    if len(self.raw_requestline) > 65536:
        self.requestline = ""
        self.request_version = ""
        self.command = ""
        self.send_error(414)
        return

    if not self.parse_request():  # An error code has been sent, just exit
        return

    handler = ServerHandler(self.rfile, self.wfile, self.get_stderr(), self.get_environ())
    handler.request_handler = self  # backpointer for logging & connection closing
    handler.run(self.server.get_app())


class Command(RunserverCommand):
    def get_handler(self, *args, **options):
        if settings.DEBUG and platform.platform().upper().startswith("DARWIN"):
            # patch the offending code
            django.core.servers.basehttp.WSGIRequestHandler.handle_one_request.__code__ = handle_one_request.__code__

        return super().get_handler(*args, **options)

And add your app to INSTALLED_APPS above the django.contrib.staticfiles:

INSTALLED_APPS = [
  . . .
  "myapp",
  "django.contrib.staticfiles",
  . . .
]