Home Assistant eventually becomes unresponsive with caldav integration enabled.

[hard2reid]

The problem

Home Assistant becomes unresponsive and I need to do a hard reboot when caldav is enabled.

What version of Home Assistant Core has the issue?

2024.10.4

What was the last working version of Home Assistant Core?

No response

What type of installation are you running?

Home Assistant OS

Integration causing the issue

caldav

Link to integration documentation on our website

https://www.home-assistant.io/integrations/caldav/

Diagnostics information

From the event logs:Detected blocking call to open with args ('/usr/local/lib/python3.12/site-packages/pytz/zoneinfo/Africa/Abidjan', 'rb') inside the event loop by integration 'caldav' at homeassistant/components/caldav/coordinator.py, line 96: if not hasattr(event.instance, "vevent"): (offender: /usr/local/lib/python3.12/site-packages/pytz/init.py, line 108: return open(filename, 'rb')), please create a bug report at https://github.com/home-assistant/core/issues?q=is%3Aopen+is%3Aissue+label%3A%22integration%3A+caldav%22 For developers, please see https://developers.home-assistant.io/docs/asyncio_blocking_operations/#open Traceback (most recent call last): File "", line 198, in _run_module_as_main File "", line 88, in _run_code File "/usr/src/homeassistant/homeassistant/main.py", line 223, in sys.exit(main()) File "/usr/src/homeassistant/homeassistant/main.py", line 209, in main exit_code = runner.run(runtime_conf) File "/usr/src/homeassistant/homeassistant/runner.py", line 189, in run return loop.run_until_complete(setup_and_run_hass(runtime_config)) File "/usr/local/lib/python3.12/asyncio/base_events.py", line 674, in run_until_complete self.run_forever() File "/usr/local/lib/python3.12/asyncio/base_events.py", line 641, in run_forever self._run_once() File "/usr/local/lib/python3.12/asyncio/base_events.py", line 1990, in _run_once handle._run() File "/usr/local/lib/python3.12/asyncio/events.py", line 88, in _run self._context.run(self._callback, *self._args) File "/usr/src/homeassistant/homeassistant/helpers/update_coordinator.py", line 330, in async_refresh await self._async_refresh(log_failures=True) File "/usr/src/homeassistant/homeassistant/helpers/update_coordinator.py", line 354, in _async_refresh self.data = await self._async_update_data() File "/usr/src/homeassistant/homeassistant/components/caldav/coordinator.py", line 96, in _async_update_data if not hasattr(event.instance, "vevent"):

Example YAML snippet

No response

Anything in the logs that might be useful for us?

No response

Additional information

No response

[home-assistant[bot]]

caldav documentation caldav source

[sparment]

I'm having this exact issue as well. I removed the CalDAV integration and the warning went away. As soon as I added the integration back the warning showed up immediately in my log.