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I've been looking at the code and @ColinRobbins is right, its an issue with handle_failed_auth, it looks like its having an issue getting or updating the config_entries information.

This error will happen to everyone using this weekly, as the token has a 7 day expiry on it.

Waiting a bit, deleting the integration and re-adding it is the current workaround (showing the current auth system isn't at fault, its just the reauth calls that aren't working).

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I'm also seeing this.. I've removed and re-added and i'm getting the below in the logs :

2021-08-31 10:55:07 ERROR (MainThread) [homeassistant.components.sensor] Error while setting up hildebrandglow_dcc platform for sensor Traceback (most recent call last): File "/config/custom_components/hildebrandglow_dcc/sensor.py", line 33, in async_setup_entry resources = await hass.async_add_executor_job(glow.retrieve_resources) File "/usr/local/lib/python3.9/concurrent/futures/thread.py", line 52, in run result = self.fn(*self.args, **self.kwargs) File "/config/custom_components/hildebrandglow_dcc/glow.py", line 78, in retrieve_resources raise InvalidAuth custom_components.hildebrandglow_dcc.glow.InvalidAuth During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/usr/src/homeassistant/homeassistant/helpers/entity_platform.py", line 249, in _async_setup_platform await asyncio.shield(task) File "/config/custom_components/hildebrandglow_dcc/sensor.py", line 36, in async_setup_entry await Glow.handle_failed_auth(config, hass) TypeError: handle_failed_auth() missing 1 required positional argument: 'hass'

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Interestingly, mine has just started working again...

I removed the integration and re-added it and after abotu 5 minutes it seems to be working again.

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Mine has just started working again as well, but it did take about an hour after re adding integration.

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Please see here: https://community.home-assistant.io/t/hildebrandglow-smart-meters-smets2/267603/77

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I'm seeing this issue too. It seems after a while the authentication times out.
Removing and re-installing the integration seems to fix it.

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@googanhiem, @HandyHat I think I have implemented a fix.
In custom_components/hildebrandglow_dcc/glow.py I changed

     async def handle_failed_auth(self, config: ConfigEntry, hass: HomeAssistant) -> None: 

to

      @classmethod
      async def handle_failed_auth(cls, config: ConfigEntry, hass: HomeAssistant) -> None:

and restarted home assistant.
Seems to be working.

Need to wait a week, for it to time out again, and see if it automatically reconnects.
If all goes well, I’ll make a pull request on the github repro in a week or two.
(ColinRobbins@1c22d55#diff-44afaf6cb9c1f06d1df29362986d19bdf271a91551603ddf8ee3fda4781f1f9b)

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Looks good. You could test it by changing the token expiry in the configentries file (it's in .storage).
I'll try it tonight.

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Unfortunately mine didn't refresh the token correctly after a week. Same error.

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Same here, but a slightly different error (getting a 404 error, not a 401).
With a simple restart of hass it re authenticated OK.
I’ve made another modification to handle the 404 error.
See you here same time next week to see if that works!

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Looking at the code, I think there is an issue with updating the "glow" instance in the running sensor.
I've tried a fix...
main...ColinRobbins:main
Will see what happens next time fails.
Some the logging will need removing in time.

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I now have the reconnection working both on restart and “in flight”.
The pull request above (#39)

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I have had this integration for a few weeks and not once has it given the correct data. Always saying I have used around 0.50kwh per day. I wish!

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