Fixing Home Assistant TypeError After Update To 2025.11.1

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Fixing Home Assistant TypeError: resp.toSupervisionResult After Update

Hey, Home Assistant enthusiasts! Ever run into a snag after updating your system? This article addresses a common issue encountered after upgrading to Home Assistant Core 2025.11.1: the dreaded TypeError: resp.toSupervisionResult is not a function. This error typically surfaces when trying to control Z-Wave devices, especially through automations. Let's dive into the details and explore potential solutions to get your smart home back on track.

Understanding the Problem

The core of the problem lies in a TypeError related to the resp.toSupervisionResult function. This error indicates that a function that is expected to exist is either missing or undefined in the context where it's being called. Specifically, the error message resp.toSupervisionResult is not a function at Driver.sendSupervisedCommand suggests that the toSupervisionResult method is not available on the resp object within the sendSupervisedCommand function of the Z-Wave JS driver. This often occurs after upgrading Home Assistant, because underlying dependencies like the Z-Wave JS integration might not be fully compatible with the new core version right away. When the Z-Wave JS integration attempts to send a supervised command to a Z-Wave device, it expects a certain structure and set of methods, and if those are not present (or have changed), the error TypeError: resp.toSupervisionResult is not a function is raised, causing the command to fail. This is why the automation fails while manually controlling the light works because the manual control might be using a different, simpler command path that doesn't rely on the problematic toSupervisionResult function. It is important to ensure that all the components are up-to-date and compatible with each other to avoid such errors.

Symptoms of the Issue

  • Automations involving Z-Wave devices fail.
  • The error message TypeError: resp.toSupervisionResult is not a function appears in the Home Assistant logs.
  • Manual control of Z-Wave devices might still work.
  • The issue starts immediately after updating Home Assistant Core.

Analyzing the Provided Information

Based on the provided information, here's a breakdown:

  • Home Assistant Core Version: 2025.11.1 (issue present)
  • Last Working Version: 2025.10.4
  • Installation Type: Home Assistant OS
  • Integration: Automation (triggering the Z-Wave command)
  • Device: Z-Wave light bulb (Ezlo)
  • Error Location: The error occurs within the zwave-js library, specifically in the Driver.ts file, during the sendSupervisedCommand function.
  • Automation Snippet: The provided YAML shows a simple automation that turns on a master bedroom light at a specific time each day.

Troubleshooting Steps

Ok, let's walk through some troubleshooting steps to resolve this pesky error. Here’s what we can try:

1. Restart Home Assistant

Yeah, I know, classic advice, but sometimes it's all it takes! A simple restart can often resolve temporary glitches or issues arising from the update process. Head over to your Home Assistant instance and give it a reboot. This allows all components to be reinitialized, and it might clear up any inconsistencies that arose during the update. After restarting, check if the automation works as expected. If the issue persists, move on to the next steps.

2. Update Z-Wave JS Integration

An outdated Z-Wave JS integration could be the culprit. Make sure you're running the latest version. This ensures compatibility with the updated Home Assistant Core. Newer versions often include bug fixes and improvements that address issues like the TypeError you are encountering. To update, navigate to the Home Assistant Supervisor panel, check for updates in the Integrations section, and update the Z-Wave JS integration if a newer version is available. After updating, restart Home Assistant to apply the changes. Then, check if your automations involving Z-Wave devices are functioning correctly. If not, proceed to the next troubleshooting step.

3. Update Z-Wave JS UI (if applicable)

If you're using Z-Wave JS UI (formerly Z-Wave JS to MQTT), ensure it's also updated. This is a separate component that bridges your Z-Wave network to Home Assistant. Outdated versions of Z-Wave JS UI can cause compatibility issues. To update Z-Wave JS UI, follow the instructions provided in its documentation or web interface. Typically, this involves accessing the Z-Wave JS UI control panel and checking for updates. After updating, restart both Z-Wave JS UI and Home Assistant to ensure that the changes take effect. Once restarted, test your Z-Wave device automations to see if the TypeError has been resolved. If the problem persists, move on to the next step.

4. Check for Z-Wave JS Server Updates

The Z-Wave JS Server is another critical component. Verify that it's up to date. Like the other components, ensuring that your Z-Wave JS Server is current can resolve compatibility issues and prevent errors. To check for updates, refer to the Z-Wave JS Server documentation or the management interface you are using. After updating, restart the server and Home Assistant to ensure that the new version is running correctly. Then, test your Z-Wave device automations again to see if the TypeError has been resolved. If not, proceed to the next step in troubleshooting.

5. Re-interview the Z-Wave Device

Sometimes, the device configuration gets corrupted during updates. Re-interviewing the device can refresh its configuration and resolve communication issues. To re-interview a Z-Wave device, go to the Z-Wave JS integration in Home Assistant, select the device, and choose the