Traceback (most recent call last):


 "/usr/lib/python3.9/site-packages/cura/CuraApplication.py", line 1063, in event

return super().event(event)


 "/usr/lib/python3.9/site-packages/UM/Qt/QtApplication.py", line 464, in event

event._function_event.call()


 "/usr/lib/python3.9/site-packages/UM/Event.py", line 218, in call

self._function(*self._args, **self._kwargs)


 "/usr/lib/python3.9/site-packages/cura/Utils/Threading.py", line 34, in _handle_call

ico.result = func(*args, **kwargs)


 "/usr/lib/cura/plugins/3MFWriter/ThreeMFWorkspaceWriter.py", line 57, in write

self._writeContainerToArchive(container, archive)


 "/usr/lib/cura/plugins/3MFWriter/ThreeMFWorkspaceWriter.py", line 154, in _writeContainerToArchive

serialized_data = container.serialize(ignored_metadata_keys = ignore_keys)


 "/usr/lib/cura/plugins/XmlMaterialProfile/XmlMaterialProfile.py", line 154, in serialize

builder.start("metadata") # type: ignore
TypeError: start expected 2 arguments, got 1

Traceback (most recent call last):


 ".../lib/python3.8/site-packages/django/core/handlers/asgi.py", line 161, in __call__

response = await self.get_response_async(request)


 ".../lib/python3.8/site-packages/django/core/handlers/base.py", line 148, in get_response_async

response = await self._middleware_chain(request)
TypeError: object HttpResponse can't be used in 'await' expression
