Unable to upload profile picture (Internal Server Error)

[tyhdefu]

Description

When trying to upload a profile picture, the operation fails, giving me an error on my client of "Error Internal server error".
Inside the homeserver.log it has the following error AttributeError: module 'PIL.Image' has no attribute 'ANTIALIAS'

Steps to reproduce

Setup nginx with reverse proxy, and add matrix

• source ~/synapse/env/bin/activate
• pip install --upgrade pip virtualenv six packaging appdirs
• pip install --upgrade setuptools
• source ~/synapse/env/bin/activate
• pip install matrix-synapse
• python -m synapse.app.homeserver --server-name my_home_server_ip.... --config-path homeserver.yaml --generate-config --report-stats=no
• synctl start
• Observe matrix working properly for sending messages and logging in.
• Attempt to upload profile picture
• Observe error on client and python error on homeserver.log

Homeserver

My own homeserver I just set up.

Synapse Version

1.87.0 (Python 3.10.6)

Installation Method

pip (from PyPI)

Database

SQLite AFAIK

Workers

I don't know

Platform

Ubuntu arm, virtual python environment

Configuration

No response

Relevant log output

2023-07-09 12:22:43,318 - synapse.http.site - 569 - WARNING - sentinel - forwarded request lacks an x-forwarded-proto header: assuming https
2023-07-09 12:22:56,262 - synapse.http.site - 569 - WARNING - sentinel - forwarded request lacks an x-forwarded-proto header: assuming https
2023-07-09 12:22:56,263 - synapse.access.http.8008 - 461 - INFO - GET-100 - 81.102.243.198 - 8008 - {None} Processed request: 0.000sec/0.001sec (0.000sec, 0.000sec) (0.000sec/0.000sec/0) 857B 200 "GET /_matri
x/client/versions HTTP/1.0" "Element/1.6.3 (samsung SM-G960F; Android 10; QP1A.190711.020.G960FXXUHFVG4; Flavour GooglePlay; MatrixAndroidSdk2 1.6.3)" [0 dbevts]
2023-07-09 12:22:58,961 - synapse.http.site - 569 - WARNING - sentinel - forwarded request lacks an x-forwarded-proto header: assuming https
2023-07-09 12:22:58,962 - synapse.media.media_repository - 204 - INFO - POST-101 - Stored local media in file '/home/xxx/synapse/media_store/local_content/xh/vx/DspdAHBkJLjvAKqZLyJy'
2023-07-09 12:22:58,967 - synapse.http.server - 133 - ERROR - POST-101 - Failed handle request via 'UploadResource': <XForwardedForRequest at 0xffff8c572dd0 method='POST' uri='/_matrix/media/r0/upload?filenam
e=IMG_20221013_182729_069_e_1688905376003.jpg' clientproto='HTTP/1.0' site='8008'>
Traceback (most recent call last):
  File "/home/xxx/synapse/env/lib/python3.10/site-packages/synapse/http/server.py", line 319, in _async_render_wrapper
    callback_return = await self._async_render(request)
  File "/home/xxx/synapse/env/lib/python3.10/site-packages/synapse/http/server.py", line 349, in _async_render
    callback_return = await raw_callback_return
  File "/home/xxx/synapse/env/lib/python3.10/site-packages/synapse/rest/media/upload_resource.py", line 95, in _async_render_POST
    content_uri = await self.media_repo.create_content(
  File "/home/xxx/synapse/env/lib/python3.10/site-packages/synapse/media/media_repository.py", line 215, in create_content
    await self._generate_thumbnails(None, media_id, media_id, media_type)
  File "/home/xxx/synapse/env/lib/python3.10/site-packages/synapse/media/media_repository.py", line 797, in _generate_thumbnails
    t_byte_source = await defer_to_thread(
  File "/home/xxx/synapse/env/lib/python3.10/site-packages/twisted/python/threadpool.py", line 244, in inContext
    result = inContext.theWork()  # type: ignore[attr-defined]
  File "/home/xxx/synapse/env/lib/python3.10/site-packages/twisted/python/threadpool.py", line 260, in <lambda>
    inContext.theWork = lambda: context.call(  # type: ignore[attr-defined]
  File "/home/xxx/synapse/env/lib/python3.10/site-packages/twisted/python/context.py", line 117, in callWithContext
    return self.currentContext().callWithContext(ctx, func, *args, **kw)
  File "/home/xxx/synapse/env/lib/python3.10/site-packages/twisted/python/context.py", line 82, in callWithContext
    return func(*args, **kw)
  File "/home/xxx/synapse/env/lib/python3.10/site-packages/synapse/logging/context.py", line 969, in g
    return f(*args, **kwargs)
  File "/home/xxx/synapse/env/lib/python3.10/site-packages/synapse/media/thumbnailer.py", line 172, in crop
    with self._resize(scaled_width, scaled_height) as scaled_image:
  File "/home/xxx/synapse/env/lib/python3.10/site-packages/synapse/media/thumbnailer.py", line 134, in _resize
    return self.image.resize((width, height), Image.ANTIALIAS)
AttributeError: module 'PIL.Image' has no attribute 'ANTIALIAS'

Anything else that would be useful to know?

Same result when using both the element android app and the web client at riot.im

[dklimpel]

Duplicate to #15873 ?

[tyhdefu]

Thanks, indeed it was, missed that when searching because it was more general.