The problem

Just did the core update and I get a Error: Object of type DockerMount is not JSON serializable when doing a ha core check from the CLI

Installation method - Home Assistant OS
Core - 2026.1.0
Supervisor - 2026.01.0
Operating System - 16.3
Frontend - 20260107.0

What version of Home Assistant Core has the issue?

2026.1.0

What was the last working version of Home Assistant Core?

previous

What type of installation are you running?

Home Assistant Core

Integration causing the issue

No response

Link to integration documentation on our website

No response

Diagnostics information

it is a core issue.. not sure what to provide here

Example YAML snippet

was just doing a 'ha core check' on the CLI.. I know it worked in the previous version because I just did this the other day

Anything in the logs that might be useful for us?

➜  ~ ha core check
Processing... Done.

Error: Object of type DockerMount is not JSON serializable

Additional information

No response