Django: 404.html exists but 500.html is used

问题

http://127.0.0.1:8000/app/slug/

With Debug=True I get Page not found (404) - No entry found matching the query. With Debug=False I get shown the projectName/templates/500.html instead of 404.html.

Both look exactly the same. 500.html:

{% extends "base.html" %}

{% block title %}server error{% endblock %}

{% block content %}

<h3>Error 500: server error</h3>

{% endblock %}

404.html:

{% extends "base.html" %}

{% block title %}page not found{% endblock %}

{% block content %}

<h3>Error 404: page not found</h3>

{% endblock %}

Why does Django load 500 instead of 404 although it exists? It cannot be a template error.

回答1:

If you're 100% sure that you've correctly set up ALLOWED_HOSTS in your settings, chances are your 404.html template is somehow not correct. There might be a syntax error (or it can't find the base template), which, in turn, causes a new 500 exception to be raised.

Try simplifying your 404.html by only including static HTML.

来源：https://stackoverflow.com/questions/17921753/django-404-html-exists-but-500-html-is-used