OData Error when reading MS Teams messages

Hello folks,

I have a pbi file which read multiple ms teams channels (using MS Graph Beta). It worked fine for the last months, but since last week one of the channels it is not working anymore when I update.

The file has a table with all channels url and a function "get_messages" which read all messages of the channels.

All other channels are working fine.

It shows the following message:

"DataSource.Error: OData: A type named 'Microsoft.Teams.GraphSvc.conversationIdentityType' could not be resolved by the model. When a model is available, each type name must resolve to a valid type.
Details:
DataSourceKind=OData
DataSourcePath=https://graph.microsoft.com/beta/teams/{team_id}/channels/{channel_id}/messages"

Can somebody help me?

best regards for all.