After update to latest version, login via web portal can not receive and get any messages.

[Musda]

Description

After update to latest version, login via web portal occur the following error log.

Steps to reproduce

Update Synapse to 1.143.0, Web to 1.26.0

Login to web portal and the error occurred.

Homeserver

matrix.atiia.org

Synapse Version

{"server_version":"1.143.0"}

Installation Method

Docker (matrixdotorg/synapse)

Database

Postgres

Workers

Single process

Platform

Container

Configuration

Configuration file for Synapse.

This is a YAML file: see [1] for a quick introduction. Note in particular

that indentation is important: all the elements of a list or dictionary

should have the same indentation.

[1] https://docs.ansible.com/ansible/latest/reference_appendices/YAMLSyntax.html

For more information on how to configure Synapse, including a complete accounting of

each option, go to docs/usage/configuration/config_documentation.md or

https://element-hq.github.io/synapse/latest/usage/configuration/config_documentation.html

server_name: "matrix.atiia.org"
pid_file: /data/homeserver.pid
listeners:

• port: 8008
  tls: false
  type: http
  x_forwarded: true
  resources:
  • names: [client, federation, openid]
    compress: false
    database:
    name: psycopg2
    args:
    user: synapse
    password: changeme
    dbname: synapse
    host: 10.10.20.140
    cp_min: 5
    cp_max: 10
    log_config: "/data/matrix.atiia.org.log.config"
    media_store_path: /data/media_store
    enable_registration: false
    allow_guest_access: true
    registration_shared_secret: "x"
    report_stats: true
    macaroon_secret_key: "x,"
    form_secret: "x"
    signing_key_path: "/data/matrix.atiia.org.signing.key"
    serve_server_wellknown: true
    max_upload_size: 500M
    trusted_key_servers:
• server_name: "matrix.atiia.org"
  ip_range_whitelist:
• '10.0.0.0/8'
  url_preview_ip_range_whitelist:
• '127.0.0.1'

outbound_push_restricted_ips:
allow:
- '127.0.0.1'
- '172.17.0.1'
- '192.168.0.0/16'

ip_range_whitelist:

• '127.0.0.1'

policy:
data:
admin_clients:
- x
push:
enabled: true
push_gateway_url: "http://10.10.20.140:8030/"
include_content: false
group_unread_count_by_room: false
jitter_delay: 2s
experimental_features:
msc3861:
enabled: true
# Synapse will call {issuer}/.well-known/openid-configuration to get the OIDC configuration
issuer: http://10.10.20.140:8080/
# Matches the client_id in the auth service config
client_id: x
# Matches the client_auth_method in the auth service config
client_auth_method: client_secret_basic
# Matches the client_secret in the auth service config
client_secret: "x"
# Matches the matrix.secret in the auth service config
admin_token: "x"
msc4108_enabled: true

MSC3266: Room summary API. Used for knocking over federation

msc3266_enabled: true

MSC4222 needed for syncv2 state_after. This allow clients to

correctly track the state of the room.

msc4222_enabled: true

max_event_delay_duration: 24h

rc_message:
per_second: 0.5
burst_count: 30

rc_delayed_event_mgmt:
per_second: 1
burst_count: 20

vim:ft=yaml

Relevant log output

2025-12-06 00:55:21,750 - synapse.http.server - 146 - ERROR - GET-184 - Failed handle request via 'SyncRestServlet': <XForwardedForRequest at 0x7f7e92b447d0 method='GET' uri='/_matrix/client/v3/sync?filter=0&timeout=0&org.matrix.msc4222.use_state_after=true&_cacheBuster=1764982521394' clientproto='HTTP/1.1' site='8008'>
Traceback (most recent call last):
  File "/usr/local/lib/python3.13/site-packages/synapse/http/server.py", line 334, in _async_render_wrapper
    callback_return = await self._async_render(request)
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/synapse/http/server.py", line 575, in _async_render
    callback_return = await raw_callback_return
                      ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/synapse/rest/client/sync.py", line 269, in on_GET
    sync_result = await self.sync_handler.wait_for_sync_for_user(
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<6 lines>...
    )
    ^
  File "/usr/local/lib/python3.13/site-packages/synapse/handlers/sync.py", line 359, in wait_for_sync_for_user
    res = await self.response_cache.wrap(
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<7 lines>...
    )
    ^
  File "/usr/local/lib/python3.13/site-packages/synapse/util/caches/response_cache.py", line 322, in wrap
    return await make_deferred_yieldable(result)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/twisted/internet/defer.py", line 1195, in __iter__
    result.raiseException()
    ~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/local/lib/python3.13/site-packages/twisted/python/failure.py", line 455, in raiseException
    raise self.value.with_traceback(self.tb)
  File "/usr/local/lib/python3.13/site-packages/twisted/internet/defer.py", line 1853, in _inlineCallbacks
    result = context.run(
        cast(Failure, result).throwExceptionIntoGenerator, gen
    )
  File "/usr/local/lib/python3.13/site-packages/twisted/python/failure.py", line 467, in throwExceptionIntoGenerator
    return g.throw(self.value.with_traceback(self.tb))
           ~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/synapse/util/caches/response_cache.py", line 300, in cb
    return await callback(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/synapse/handlers/sync.py", line 460, in _wait_for_sync_for_user
    result = await self.current_sync_for_user(
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        sync_config, since_token, full_state=full_state
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/local/lib/python3.13/site-packages/synapse/handlers/sync.py", line 528, in current_sync_for_user
    sync_result = await self.generate_sync_result(
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        sync_config, since_token, full_state
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/local/lib/python3.13/site-packages/synapse/handlers/sync.py", line 1715, in generate_sync_result
    ) = await self._generate_sync_entry_for_rooms(sync_result_builder)
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/synapse/handlers/sync.py", line 2229, in _generate_sync_entry_for_rooms
    await concurrently_execute(handle_room_entries, room_entries, 10)
  File "/usr/local/lib/python3.13/site-packages/synapse/util/async_helpers.py", line 250, in concurrently_execute
    await yieldable_gather_results(
    ...<2 lines>...
    )
  File "/usr/local/lib/python3.13/site-packages/synapse/util/async_helpers.py", line 299, in yieldable_gather_results
    raise dfe.subFailure.value from None
  File "/usr/local/lib/python3.13/site-packages/twisted/internet/defer.py", line 1857, in _inlineCallbacks
    result = context.run(gen.send, result)
  File "/usr/local/lib/python3.13/site-packages/synapse/util/async_helpers.py", line 236, in _concurrently_execute_inner
    await maybe_awaitable(func(value))
  File "/usr/local/lib/python3.13/site-packages/synapse/handlers/sync.py", line 2218, in handle_room_entries
    await self._generate_room_entry(
    ...<6 lines>...
    )
  File "/usr/local/lib/python3.13/site-packages/synapse/handlers/sync.py", line 2781, in _generate_room_entry
    summary = await self.compute_summary(
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^
        room_id, sync_config, batch, state, now_token
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/local/lib/python3.13/site-packages/synapse/handlers/sync.py", line 877, in compute_summary
    state_ids = await self._state_storage_controller.get_state_ids_for_event(
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<4 lines>...
    )
    ^
  File "/usr/local/lib/python3.13/site-packages/synapse/logging/opentracing.py", line 949, in _wrapper
    return await func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/synapse/logging/opentracing.py", line 949, in _wrapper
    return await func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/synapse/storage/controllers/state.py", line 373, in get_state_ids_for_event
    state_map = await self.get_state_ids_for_events(
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<3 lines>...
    )
    ^
  File "/usr/local/lib/python3.13/site-packages/synapse/logging/opentracing.py", line 949, in _wrapper
    return await func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/synapse/logging/opentracing.py", line 949, in _wrapper
    return await func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/synapse/storage/controllers/state.py", line 318, in get_state_ids_for_events
    return {event: event_to_state[event] for event in event_ids}
                   ~~~~~~~~~~~~~~^^^^^^^
KeyError: '$o8zWpI23Sl4V9Q5AxJTOxE6d9-fQRoOKgPsFXE_Xxho'

Anything else that would be useful to know?

No response