Microsoft Graph API change events /teams/getAllMessages stopped working

Question

Hello,

We are using Microsoft Graph API change events subscription to receive messages from all channels in all teams across tenant by creating (POST) subscription with /teams/getAllMessages in resource field. Today it suddenly stopped working and we receive an error:

Operation: Create; Exception: [Status Code: BadRequest; Reason: teamId in subscription resource needs to be a valid GUID.]

But we don't want to supply any teamId or whatever, we want tenant-level subscription.
Any tips?