fix: watcher sudden closing - RK-19532

[gosharo]

Signed-off-by: Gosha [email protected]

Pull Request

Going to fix sudden watcher closing.
In this snapshot, err="error" was never passed from handler.

Checklist

Before submitting this pull request, please ensure that you have completed the following tasks:

• Reviewed the Contributing Guidelines for the Piper project.
• Ensured that your changes follow the coding guidelines and style of the project.
• Run the tests locally and made sure they pass.
• Updated the relevant documentation, if applicable.