There are no error messages. However, messages similar to the following may appear in the logs.
MicrosoftTeams.MicrosoftTeamsManager - 0 out of 0 new messages found in 'Data' are unique chat conversations.
This issue occurs when using the 'Microsoft Teams Connector' which has been deprecated and is no longer supported.
Check the logs to see which connector is being used.
[Importer] INFO Merge1.Core.Importer - Saving Report Statistics in DB for Session 249008 and Microsoft Teams Connector.
If the 'Microsoft Teams Connector' is being used then configure one of the following to capture Teams chat conversations.