Traceback (most recent call last):


 "./saleor/graphql/core/mutations.py", line 279, in mutate

response = cls.perform_mutation(root, info, **data)


 "./saleor/graphql/product/mutations/products.py", line 1400, in perform_mutation

validate_image_file(image_data, "image")


 "./saleor/graphql/core/utils/__init__.py", line 33, in validate_image_file

if not file.content_type.startswith("image/"):
AttributeError: 'NoneType' object has no attribute 'content_type'

Traceback (most recent call last):


 "/usr/src/homeassistant/homeassistant/components/websocket_api/commands.py", line 133, in handle_call_service

connection.context(msg),


 "/usr/src/homeassistant/homeassistant/core.py", line 1235, in async_call

await asyncio.shield(self._execute_service(handler, service_call))


 "/usr/src/homeassistant/homeassistant/core.py", line 1260, in _execute_service

await handler.func(service_call)


 "/usr/src/homeassistant/homeassistant/helpers/entity_component.py", line 205, in handle_service

self._platforms.values(), func, call, service_name, required_features


 "/usr/src/homeassistant/homeassistant/helpers/service.py", line 336, in entity_service_call

future.result()
# pop exception if have


 "/usr/src/homeassistant/homeassistant/helpers/service.py", line 360, in _handle_service_platform_call

await func(entity, data)


 "/usr/local/lib/python3.7/concurrent/futures/thread.py", line 57, in run

result = self.fn(*self.args, **self.kwargs)


 "/usr/src/homeassistant/homeassistant/components/plex/media_player.py", line 600, in play_media

media = self._get_music_media(library, src)


 "/usr/src/homeassistant/homeassistant/components/plex/media_player.py", line 630, in _get_music_media

artist = self.plex_server.library.section(library_name).get(artist_name)


 "/usr/local/lib/python3.7/site-packages/plexapi/library.py", line 53, in section

if section.title.lower() == title.lower():
AttributeError: 'NoneType' object has no attribute 'lower'
