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Suddenly, the Hass Calendar Addon stopped working

Third party integrations

Edwin_D (Edwin D.) October 7, 2025, 3:03pm 5

Mabaelst:

Hass Calendar Addon

Ther’s also a mention of this problem here:

Calendar Add-On + some calendar designs Share your Projects!

Hi. I keep getting the following error on startup. Any ideas? ----------------------------------------------------------- Add-on: Hass Calendar Addon Addon to consume caldav and google calendars and make calendar events available as sensordata in Home Assistant. ----------------------------------------------------------- Add-on version: 0.501 You are running the latest version of this add-on. System: Home Assistant OS 16.0 (aarch64 / raspberrypi4-64) Home Assistant Core: 2025.7.4 Home …

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