I'm upgrading our website from 5.2.x to 6.0.x and after replacing the version pins and running buildout, the website starts, but any page breaks with the following traceback:
2024-02-02 19:27:29,640 ERROR [waitress:435][waitress-0] Exception while serving /website/@@plone-upgrade
Traceback (most recent call last):
File "/srv/s-derfreitag/.batou-shared-eggs/Zope-5.8.5-py3.11.egg/ZPublisher/WSGIPublisher.py", line 181, in transaction_pubevents
yield
File "/srv/s-derfreitag/.batou-shared-eggs/Zope-5.8.5-py3.11.egg/ZPublisher/WSGIPublisher.py", line 391, in publish_module
response = _publish(request, new_mod_info)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/srv/s-derfreitag/.batou-shared-eggs/Zope-5.8.5-py3.11.egg/ZPublisher/WSGIPublisher.py", line 269, in publish
obj = request.traverse(path, validated_hook=validate_user)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/srv/s-derfreitag/.batou-shared-eggs/Zope-5.8.5-py3.11.egg/ZPublisher/BaseRequest.py", line 446, in traverse
bpth(object, self)
File "/srv/s-derfreitag/.batou-shared-eggs/Zope-5.8.5-py3.11.egg/ZPublisher/BeforeTraverse.py", line 104, in __call__
getattr(container.__class__, self._hookname)(container,
File "/srv/s-derfreitag/.batou-shared-eggs/Products.CMFPlone-6.0.7.post0-py3.11.egg/Products/CMFPlone/Portal.py", line 136, in __before_publishing_traverse__
notify(BeforeTraverseEvent(self, REQUEST))
File "/srv/s-derfreitag/.batou-shared-eggs/zope.event-5.0-py3.11.egg/zope/event/__init__.py", line 33, in notify
subscriber(event)
File "/srv/s-derfreitag/.batou-shared-eggs/zope.component-6.0-py3.11.egg/zope/component/event.py", line 27, in dispatch
component_subscribers(event, None)
File "/srv/s-derfreitag/.batou-shared-eggs/zope.component-6.0-py3.11.egg/zope/component/_api.py", line 146, in subscribers
return sitemanager.subscribers(objects, interface)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/srv/s-derfreitag/.batou-shared-eggs/zope.interface-6.0-py3.11-linux-x86_64.egg/zope/interface/registry.py", line 445, in subscribers
return self.adapters.subscribers(objects, provided)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/srv/s-derfreitag/.batou-shared-eggs/zope.interface-6.0-py3.11-linux-x86_64.egg/zope/interface/adapter.py", line 896, in subscribers
subscription(*objects)
File "/srv/s-derfreitag/.batou-shared-eggs/zope.component-6.0-py3.11.egg/zope/component/event.py", line 37, in objectEventNotify
component_subscribers((event.object, event), None)
File "/srv/s-derfreitag/.batou-shared-eggs/zope.component-6.0-py3.11.egg/zope/component/_api.py", line 146, in subscribers
return sitemanager.subscribers(objects, interface)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/srv/s-derfreitag/.batou-shared-eggs/zope.interface-6.0-py3.11-linux-x86_64.egg/zope/interface/registry.py", line 445, in subscribers
return self.adapters.subscribers(objects, provided)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/srv/s-derfreitag/.batou-shared-eggs/zope.interface-6.0-py3.11-linux-x86_64.egg/zope/interface/adapter.py", line 892, in subscribers
subscriptions = self.subscriptions([providedBy(o) for o in objects], provided)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/srv/s-derfreitag/.batou-shared-eggs/zope.interface-6.0-py3.11-linux-x86_64.egg/zope/interface/adapter.py", line 892, in <listcomp>
subscriptions = self.subscriptions([providedBy(o) for o in objects], provided)
^^^^^^^^^^^^^
File "/srv/s-derfreitag/.batou-shared-eggs/plone.dexterity-3.0.3.post0-py3.11.egg/plone/dexterity/content.py", line 135, in __get__
cache = getattr(inst, "_v__providedBy__", None)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/srv/s-derfreitag/.batou-shared-eggs/Products.CMFPlone-6.0.7.post0-py3.11.egg/Products/CMFPlone/Portal.py", line 61, in __getattr__
return super().__getattr__(name)
^^^^^^^^^^^^^^^^^^^^^^^^^
File "/srv/s-derfreitag/.batou-shared-eggs/Products.BTreeFolder2-5.1-py3.11.egg/Products/BTreeFolder2/BTreeFolder2.py", line 238, in __getattr__
return self._tree[name]
~~~~~~~~~~^^^^^^
TypeError: 'NoneType' object is not subscriptable
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/srv/s-derfreitag/.batou-shared-eggs/waitress-2.1.2-py3.11.egg/waitress/channel.py", line 428, in service
task.service()
File "/srv/s-derfreitag/.batou-shared-eggs/waitress-2.1.2-py3.11.egg/waitress/task.py", line 168, in service
self.execute()
File "/srv/s-derfreitag/.batou-shared-eggs/waitress-2.1.2-py3.11.egg/waitress/task.py", line 434, in execute
app_iter = self.channel.server.application(environ, start_response)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/srv/s-derfreitag/.batou-shared-eggs/Paste-3.5.3-py3.11.egg/paste/translogger.py", line 69, in __call__
return self.application(environ, replacement_start_response)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/srv/s-derfreitag/.batou-shared-eggs/Zope-5.8.5-py3.11.egg/ZPublisher/httpexceptions.py", line 30, in __call__
return self.application(environ, start_response)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/srv/s-derfreitag/.batou-shared-eggs/Zope-5.8.5-py3.11.egg/ZPublisher/WSGIPublisher.py", line 389, in publish_module
with transaction_pubevents(request, response):
File "/srv/s-derfreitag/.nix-profile/lib/python3.11/contextlib.py", line 155, in __exit__
self.gen.throw(typ, value, traceback)
File "/srv/s-derfreitag/.batou-shared-eggs/Zope-5.8.5-py3.11.egg/ZPublisher/WSGIPublisher.py", line 235, in transaction_pubevents
notify(pubevents.PubFailure(request, exc_info, retry))
File "/srv/s-derfreitag/.batou-shared-eggs/zope.event-5.0-py3.11.egg/zope/event/__init__.py", line 33, in notify
subscriber(event)
File "/srv/s-derfreitag/.batou-shared-eggs/zope.component-6.0-py3.11.egg/zope/component/event.py", line 27, in dispatch
component_subscribers(event, None)
File "/srv/s-derfreitag/.batou-shared-eggs/zope.component-6.0-py3.11.egg/zope/component/_api.py", line 146, in subscribers
return sitemanager.subscribers(objects, interface)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/srv/s-derfreitag/.batou-shared-eggs/zope.interface-6.0-py3.11-linux-x86_64.egg/zope/interface/registry.py", line 445, in subscribers
return self.adapters.subscribers(objects, provided)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/srv/s-derfreitag/.batou-shared-eggs/zope.interface-6.0-py3.11-linux-x86_64.egg/zope/interface/adapter.py", line 896, in subscribers
subscription(*objects)
File "/srv/s-derfreitag/.batou-shared-eggs/Products.SiteErrorLog-6.0-py3.11.egg/Products/SiteErrorLog/SiteErrorLog.py", line 342, in IPubFailureSubscriber
published = getattr(published, '__self__', published) # method --> object
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/srv/s-derfreitag/.batou-shared-eggs/Products.CMFPlone-6.0.7.post0-py3.11.egg/Products/CMFPlone/Portal.py", line 61, in __getattr__
return super().__getattr__(name)
^^^^^^^^^^^^^^^^^^^^^^^^^
File "/srv/s-derfreitag/.batou-shared-eggs/Products.BTreeFolder2-5.1-py3.11.egg/Products/BTreeFolder2/BTreeFolder2.py", line 238, in __getattr__
return self._tree[name]
~~~~~~~~~~^^^^^^
TypeError: 'NoneType' object is not subscriptable
On the upgrade guide it is mentioned that the site should be blank, but running the @@plone-upgrade should fix it, but again, I'm getting the same error trying to reach that view 
Any ideas? 
