From 0636d4d2aa6e4469198fdf662225ad862e60c5e3 Mon Sep 17 00:00:00 2001
From: Tom Forbes <tom@tomforb.es>
Date: Mon, 29 Apr 2019 10:22:43 +0200
Subject: [PATCH] Refs #30323 -- Prevented crash of autoreloader when
 get_resolver().urlconf_module raising an exception.

---
 django/utils/autoreload.py | 7 ++++++-
 docs/releases/2.2.1.txt    | 3 +++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/django/utils/autoreload.py b/django/utils/autoreload.py
index 17631e15ef..dc7c9b2cea 100644
--- a/django/utils/autoreload.py
+++ b/django/utils/autoreload.py
@@ -272,7 +272,12 @@ class BaseReloader:
         from django.urls import get_resolver
         # Prevent a race condition where URL modules aren't loaded when the
         # reloader starts by accessing the urlconf_module property.
-        get_resolver().urlconf_module
+        try:
+            get_resolver().urlconf_module
+        except Exception:
+            # Loading the urlconf can result in errors during development.
+            # If this occurs then swallow the error and continue.
+            pass
         logger.debug('Apps ready_event triggered. Sending autoreload_started signal.')
         autoreload_started.send(sender=self)
         self.run_loop()
diff --git a/docs/releases/2.2.1.txt b/docs/releases/2.2.1.txt
index 9696488e14..4a2d77aaf3 100644
--- a/docs/releases/2.2.1.txt
+++ b/docs/releases/2.2.1.txt
@@ -64,3 +64,6 @@ Bugfixes
   permissions for proxy models if the target permissions already existed. For
   example, when a permission had been created manually or a model had been
   migrated from concrete to proxy (:ticket:`30351`).
+
+* Fixed a regression in Django 2.2 that caused a crash of :djadmin:`runserver`
+  when URLConf modules raised exceptions (:ticket:`30323`).