id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
30475	Use of i18n_patterns and a buggy 404 template trigger internal server error without a backtrace	Erik Stein	nobody	"– Using i18n_patterns with prefix_default_language=True,
– trying to get the frontpage URL without a language given in the URL

works in debug mode, but gives an internal server error without any backtrace in production mode.

This was caused by a buggy 404.html template, but probably buggy 404 templates should give a backtrace, too, and i18n_patterns shouldn't be concerned by this anyway. 

Sample project: https://github.com/sha-red/bugs-django-30475"	Bug	new	Core (URLs)	2.2	Normal			Erik Stein	Unreviewed	0	0	0	0	0	0