Life360’s Google Assistant feature was removed on 4/14/2022.
Google has decided not to continue supporting Location sharing services in Google Assistant due to limited usage and maintenance costs.
Statement from Google:
Google Assistant's features are constantly evolving.
Access to your contacts' whereabouts with Google Assistant from Life360 will no longer be available. Questions like, "where's my family?" or "where's John?" will no longer pull up their locations from Life360. However, you can still go to the Life360 app to find information shared by your friends and family about their whereabouts. As a reminder, Google doesn't store location data from Life360 to your Google account.
Sincerely,
The Google Assistant team