Django development server shutdown on error.

[User632716]

As in my question on SO [here](​https://stackoverflow.com/questions/55953263/django-development-server-shutdown-on-error) I am running a dev server on localhost to test a django app. About a week ago the dev server started exiting on error- which is not ideal.

To give you an instance, imagine I want to create a new view, I make my template, then I add the following in urls:

urlpatterns = [...,path('forgotten-password', ForgottenPassword.as_view(), name='forgotten_password'),...]

I haven't yet created the ForgottenPassword class based view yet, so rightly the server throws the error:

File "/code/accounts/urls.py", line 19, in <module>
path('forgotten-password', ForgottenPassword.as_view(), name='forgotten_password'),
NameError: name 'ForgottenPassword' is not defined

The server then quits however. This is not the desired behavior. I expect the server to remain in an error state until i fix the error (this happened up to about a week ago). It was around the same time that we upgraded from django 2.1 to 2.2, is this a desired behaviour in 2.2?

• Having downgraded to 2.1 we no longer have this problem, it must be to do with the update

[Mariusz Felisiak]

This bug has been fixed in Django 2.2.1, see ​release notes:

Fixed a regression in Django 2.2 that caused a crash of runserver when URLConf modules raised exceptions (#30323).

Duplicate of #30323.