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Initial installation of AI quality evaluation add-on fails with server error #22174
Description
Describe the issue
When installing the AI quality evaluation add-on for the first time, it fails with a server error.
The reason might be that this code runs also for the first install and fails because no pk exists yet.
I already tried
- I've read and searched the documentation.
- I've searched for similar filed issues in this repository.
Steps to reproduce the behavior
- On a Weblate instance with at least one configured AI suggestion service, go to Manage > Add-ons.
- Click Install for the AI quality evaluation add-on.
- Save the config.
Expected behavior
Add-on installed and config saved.
Screenshots
No response
Exception traceback
[2026-10-15 13:59:02,939: ERROR/174] Internal Server Error: /manage/addons/
Traceback (most recent call last):
File "/app/venv/lib/python3.14/site-packages/django/core/handlers/exception.py", line 55, in inner
response = get_response(request)
File "/app/venv/lib/python3.14/site-packages/django/core/handlers/base.py", line 198, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/app/venv/lib/python3.14/site-packages/weblate/auth/decorators.py", line 66, in sync_wrapper
return view(request, *args, **kwargs)
File "/app/venv/lib/python3.14/site-packages/django/views/generic/base.py", line 106, in view
return self.dispatch(request, *args, **kwargs)
~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.14/site-packages/django/views/generic/base.py", line 145, in dispatch
return handler(request, *args, **kwargs)
File "/app/venv/lib/python3.14/site-packages/weblate/addons/views.py", line 346, in post
instance = form.save()
File "/app/venv/lib/python3.14/site-packages/weblate/addons/forms.py", line 132, in save
self._addon.configure(self.serialize_form())
~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.14/site-packages/weblate/addons/ai.py", line 201, in configure
type(self.instance).objects.select_for_update().get(pk=self.instance.pk)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.14/site-packages/django/db/models/query.py", line 639, in get
raise self.model.DoesNotExist(
"%s matching query does not exist." % self.model._meta.object_name
)How do you run Weblate?
Docker container
Weblate version
2026.10.1
Weblate deploy checks
Additional context
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fix(addons): handle initial AI quality installation
github-actions commentedon Oct 15, 2026
Thank you for your report — the issue has now been resolved.
The fix has been merged into the repository and will be included in the upcoming Weblate 2026.11 release.