VWsFriend stops working after a few days

[Tapter]

I've now updated to 0.24.10 and it started to work again correctly after the login procedure change.
However, three times in a row, it again stops after around 2-3 days. After the below exception occurs, nothing is updated anymore:

sqlalchemy.exc.InvalidRequestError: Can't operate on closed transaction inside context manager.  Please complete the context manager before emitting further commands.
   raise exc.InvalidRequestError(
  File \"/opt/venv/lib/python3.12/site-packages/sqlalchemy/engine/util.py\", line 111, in _trans_ctx_check"
   TransactionalContext._trans_ctx_check(session)
  File \"/opt/venv/lib/python3.12/site-packages/sqlalchemy/orm/session.py\", line 929, in __init__"
           ^^^^^^^^^^^^^^^^^^^
   trans = SessionTransaction(
  File \"/opt/venv/lib/python3.12/site-packages/sqlalchemy/orm/session.py\", line 1879, in _autobegin_t"
   session._autobegin_t()
  File \"/opt/venv/lib/python3.12/site-packages/sqlalchemy/orm/state.py\", line 927, in _modified_event"
    state._modified_event(dict_, self, previous)"
  File \"/opt/venv/lib/python3.12/site-packages/sqlalchemy/orm/attributes.py\", line 1520, in fire_replace_event"
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    value = self.fire_replace_event(state, dict_, value, old, initiator)"
  File \"/opt/venv/lib/python3.12/site-packages/sqlalchemy/orm/attributes.py\", line 1477, in set"
   self.impl.set(
  File \"/opt/venv/lib/python3.12/site-packages/sqlalchemy/orm/attributes.py\", line 540, in __set__"
   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    self.chargingSession.charger = chargerFromLatLonWithGeofence(weConnect=self.vehicle.weConnectVehicle.weConnect, session=self.session,"
  File \"/opt/venv/lib/python3.12/site-packages/vwsfriend/agents/charge_agent.py\", line 385, in updatePosition"
   self.updatePosition()
  File \"/opt/venv/lib/python3.12/site-packages/vwsfriend/agents/charge_agent.py\", line 224, in __onChargingStateChange"
    observer(element=self, flags=self.onCompleteNotifyFlags)"
  File \"/opt/venv/lib/python3.12/site-packages/weconnect/addressable.py\", line 96, in updateComplete"
 [Previous line repeated 3 more times]
   child.updateComplete()
  File \"/opt/venv/lib/python3.12/site-packages/weconnect/addressable.py\", line 533, in updateComplete"
   child.updateComplete()
  File \"/opt/venv/lib/python3.12/site-packages/weconnect/addressable.py\", line 533, in updateComplete"
   child.updateComplete()
  File \"/opt/venv/lib/python3.12/site-packages/weconnect/addressable.py\", line 533, in updateComplete"
   self.updateComplete()
  File \"/opt/venv/lib/python3.12/site-packages/weconnect/weconnect.py\", line 199, in update"
    weConnect.update(updateCapabilities=True, updatePictures=True, force=True, selective=[Domain.ACCESS,"
  File \"/opt/venv/lib/python3.12/site-packages/vwsfriend/vwsfriend_base.py\", line 519, in main"
            ^^^^^^
   sys.exit(main())
  File \"/opt/venv/bin/vwsfriend\", line 8, in <module>"

[Tapter]

Now it won't even start up anymore:

2025-12-12T12:05:34+0100:INFO:weconnect:Server asks for new authorization 
2025-12-12T12:05:35+0100:WARNING:vwsfriend_base:There was a problem when communicating with WeConnect. If this problem persists please open a bug report: Could not find state token in authorization page, will retry after 300s
.. and after a while ..
2025-12-12T23:52:40+0100:INFO:vwsfriend_base:vwsfriend 0.24.10 (using WeConnect-python 0.60.11, WeConnect-mqtt 0.49.5) 
2025-12-12T23:52:40+0100:INFO:session_manager:Could not use token from file /tmp/weconnect.token ([Errno 2] No such file or directory: '/tmp/weconnect.token') 
2025-12-12T23:52:41+0100:CRITICAL:vwsfriend_base:There was a problem when communicating with WeConnect. If this problem persists please open a bug report: No Location header in redirect 

Restarting did not help, but cleaning the container did. It seems there were some leftovers that prevented the container from continuing? Could it have somethign to do with that /tmp/weconnect.token ?

[oldgitdaddy]

I had similar issue and logged into volkswagen.de. There I had to pass the 2 Factor Authentication via email. Then it started to work again. Probably, this may also help you.

[Tapter]

I also did this but it didn't help. It seems that if/when VWsFriend runs into an exception once, the main thread just stops - it completely stops trying connecting again then. After the exception posted above, nothing follows anymore...

[DieterKoblenz]

Same issue here. Running VWsFriend [0.24.10]

Restarting fixes it, but lost a lot of trips in between me checking.

psycopg2.errors.InvalidTextRepresentation: invalid input value for enum category: "ASSISTANCE"
LINE 1: ...L, NULL, 'Front Assist availability is limited.', 'ASSISTANC...
^
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/opt/venv/bin/vwsfriend", line 8, in
sys.exit(main())

[steffenspies]

Today between 16:52 and 19:35 there was a problem with VWs server/gateway sending a 502 back. Am 05.01.2026 um 21:53 schrieb DieterKoblenz ***@***.***>:DieterKoblenz left a comment (tillsteinbach/VWsFriend#760) Same issue here. Running VWsFriend [0.24.10] Restarting fixes it, but lost a lot of trips in between me checking. psycopg2.errors.InvalidTextRepresentation: invalid input value for enum category: "ASSISTANCE" LINE 1: ...L, NULL, 'Front Assist availability is limited.', 'ASSISTANC... ^ The above exception was the direct cause of the following exception: Traceback (most recent call last): File "/opt/venv/bin/vwsfriend", line 8, in sys.exit(main()) —Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[oldgitdaddy]

The same error is also reported here: #693

@tillsteinbach: Can we at least get a plan how to fix this? Do we need to patch WeConnect Python lib as well, or is DB migration script sufficient?

[tillsteinbach]

Just DB migration. Alembic likely can generate the migration script. In the meantime you can also add the enumeration value by hand in your DB to prevent it from crashing.

[oldgitdaddy]

Thanks.
temporary fix is: ALTER TYPE public."category" ADD VALUE 'ASSISTANCE';

[Tapter]

But this 'ASSISTANCE' thing seems to be another bug than the one I reported above, isn't it? In my stacktrace there seems to be another problem, or does it just hide that one below?

[mailkluge]

Had same issue today. Here is the log:

vwsfriend_1 | 2026-01-16T11:53:20.669559182Z 2026-01-16T11:53:20+0000:INFO:weconnect_mqtt_base:Client successfully disconnected
vwsfriend_1 | 2026-01-16T11:53:20.669590480Z 2026-01-16T11:53:20+0000:ERROR:vwsfriend_base:MQTT Connection failed
vwsfriend_1 | 2026-01-16T11:53:20.669683995Z Traceback (most recent call last):
vwsfriend_1 | 2026-01-16T11:53:20.669705225Z File "/opt/venv/bin/vwsfriend", line 8, in
vwsfriend_1 | 2026-01-16T11:53:20.669834987Z sys.exit(main())
vwsfriend_1 | 2026-01-16T11:53:20.669860375Z ^^^^^^
vwsfriend_1 | 2026-01-16T11:53:20.669918514Z File "/opt/venv/lib/python3.12/site-packages/vwsfriend/vwsfriend_base.py", line 516, in main
vwsfriend_1 | 2026-01-16T11:53:20.670301099Z mqttCLient.updateWeConnect(reraise=True)
vwsfriend_1 | 2026-01-16T11:53:20.670314715Z File "/opt/venv/lib/python3.12/site-packages/weconnect_mqtt/weconnect_mqtt_base.py", line 462, in updateWeConnect
vwsfriend_1 | 2026-01-16T11:53:20.670618182Z self.weConnect.update(updateCapabilities=self.updateCapabilities, updatePictures=self.updatePictures, selective=self.selective, force=True)
vwsfriend_1 | 2026-01-16T11:53:20.670677994Z File "/opt/venv/lib/python3.12/site-packages/weconnect/weconnect.py", line 199, in update
vwsfriend_1 | 2026-01-16T11:53:20.670806955Z self.updateComplete()
vwsfriend_1 | 2026-01-16T11:53:20.670815832Z File "/opt/venv/lib/python3.12/site-packages/weconnect/addressable.py", line 533, in updateComplete
vwsfriend_1 | 2026-01-16T11:53:20.671010757Z child.updateComplete()
vwsfriend_1 | 2026-01-16T11:53:20.671016888Z File "/opt/venv/lib/python3.12/site-packages/weconnect/addressable.py", line 533, in updateComplete
vwsfriend_1 | 2026-01-16T11:53:20.671080277Z child.updateComplete()
vwsfriend_1 | 2026-01-16T11:53:20.671085777Z File "/opt/venv/lib/python3.12/site-packages/weconnect/addressable.py", line 533, in updateComplete
vwsfriend_1 | 2026-01-16T11:53:20.671147292Z child.updateComplete()
vwsfriend_1 | 2026-01-16T11:53:20.671152722Z [Previous line repeated 3 more times]
vwsfriend_1 | 2026-01-16T11:53:20.671154666Z File "/opt/venv/lib/python3.12/site-packages/weconnect/addressable.py", line 96, in updateComplete
vwsfriend_1 | 2026-01-16T11:53:20.671203798Z observer(element=self, flags=self.onCompleteNotifyFlags)
vwsfriend_1 | 2026-01-16T11:53:20.671206793Z File "/opt/venv/lib/python3.12/site-packages/vwsfriend/agents/charge_agent.py", line 224, in _onChargingStateChange
vwsfriend_1 | 2026-01-16T11:53:20.671338029Z self.updatePosition()
vwsfriend_1 | 2026-01-16T11:53:20.671347396Z File "/opt/venv/lib/python3.12/site-packages/vwsfriend/agents/charge_agent.py", line 385, in updatePosition
vwsfriend_1 | 2026-01-16T11:53:20.671400746Z self.chargingSession.charger = chargerFromLatLonWithGeofence(weConnect=self.vehicle.weConnectVehicle.weConnect, session=self.session,
vwsfriend_1 | 2026-01-16T11:53:20.671417898Z ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
vwsfriend_1 | 2026-01-16T11:53:20.671425452Z File "/opt/venv/lib/python3.12/site-packages/sqlalchemy/orm/attributes.py", line 540, in set
vwsfriend_1 | 2026-01-16T11:53:20.671627540Z self.impl.set(
vwsfriend_1 | 2026-01-16T11:53:20.671631387Z File "/opt/venv/lib/python3.12/site-packages/sqlalchemy/orm/attributes.py", line 1477, in set
vwsfriend_1 | 2026-01-16T11:53:20.671784433Z value = self.fire_replace_event(state, dict, value, old, initiator)
vwsfriend_1 | 2026-01-16T11:53:20.671802718Z ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
vwsfriend_1 | 2026-01-16T11:53:20.671807396Z File "/opt/venv/lib/python3.12/site-packages/sqlalchemy/orm/attributes.py", line 1520, in fire_replace_event
vwsfriend_1 | 2026-01-16T11:53:20.671921770Z state.modified_event(dict, self, previous)
vwsfriend_1 | 2026-01-16T11:53:20.671928533Z File "/opt/venv/lib/python3.12/site-packages/sqlalchemy/orm/state.py", line 927, in _modified_event
vwsfriend_1 | 2026-01-16T11:53:20.672158623Z session._autobegin_t()
vwsfriend_1 | 2026-01-16T11:53:20.672161929Z File "/opt/venv/lib/python3.12/site-packages/sqlalchemy/orm/session.py", line 1879, in _autobegin_t
vwsfriend_1 | 2026-01-16T11:53:20.672470747Z trans = SessionTransaction(
vwsfriend_1 | 2026-01-16T11:53:20.672478772Z ^^^^^^^^^^^^^^^^^^^
vwsfriend_1 | 2026-01-16T11:53:20.672483491Z File "/opt/venv/lib/python3.12/site-packages/sqlalchemy/orm/session.py", line 929, in init
vwsfriend_1 | 2026-01-16T11:53:20.672580552Z TransactionalContext._trans_ctx_check(session)
vwsfriend_1 | 2026-01-16T11:53:20.672585872Z File "/opt/venv/lib/python3.12/site-packages/sqlalchemy/engine/util.py", line 111, in _trans_ctx_check
vwsfriend_1 | 2026-01-16T11:53:20.672698964Z raise exc.InvalidRequestError(
vwsfriend_1 | 2026-01-16T11:53:20.672706127Z sqlalchemy.exc.InvalidRequestError: Can't operate on closed transaction inside context manager. Please complete the context manager before emitting further commands.

Seams like there was a try to reconnect to VWs MQTT, right? Can it build robust / resilient than to stop working without possibility to check health of the overall application itself?

[DieterKoblenz]

ALTER TYPE public."category" ADD VALUE 'ASSISTANCE';

Do you use docker, if so how can you do this?

[mailkluge]

ALTER TYPE public."category" ADD VALUE 'ASSISTANCE';

Do you use docker, if so how can you do this?

You need to switch to the container. You can do this with the following command:

docker exec -it vwsfriend_postgresdb_1 psql -U -d vwsfriend

You can find the name of the database user in the .env file. You can check if the container name is correct (vwsfriend_postgresdb_1 in my example) with the docker ps command. If your container has a different name, you need to change it.

After successfully executing the command, you are in the container and psql is started and you can enter the command mentioned above (ALTER...).