Using refresh_token not refreshing?

[malanmurphy]

It looks like the refresh token support isn't working as expected. Once you get the exporter up and running with --credentials and --refresh-token, it scrapes Nest API endpoints as expected, but then stops working after two hours returning:

2023/08/05 09:47:24 unable to get devices: googleapi: Error 401: Request had invalid authentication credentials. Expected OAuth 2 access token, login cookie or other valid authentication credential. See https://developers.google.com/identity/sign-in/web/devconsole-project.
More details:
Reason: authError, Message: Invalid Credentials

My understanding is that tools should use the refresh token to refresh access, but I'm no expert in OATH2 so maybe I'm missing something? I'm running the exporter with:

./smartdevicemanagement_exporter --listen-address :9788 --project-id <red_guid> --credentials ./client_secret.json --refresh-token ./refresh_token.json

Thanks!