Dear Maintainers,

Yesterday we discovered that reaching the rate limit of the registration page of our Mailman installation throws this exception (and a lot of emails, sigh!):

To generate this page, mailman3 use allauth package; when rate limit is triggered it
tries to display a page for error 429 but cannot find the corresponding template.

My impression is that

* a missing template should not throw such a serious exception
* the task of providing the template is of this package, as it is hardcoded in ratelimit.py

but I could be wrong.

Best regards.

Paolo