Dear, today I realised my fact Dataflows contains couple of other Dataflows couldn't be refreshed and one of the error is "Error: An internal error occurred.. Param1 = DataflowInternalError Request I...
Intereting, one linked report caused the issue whic did not show any error, and there was no any error when refreshing. How did I figure out? Disabled load linked queries then tried to refresh, if it works enable one by one.... one empity report caused... For me solved the issue. Thanks your support...