I am getting the below error while refreshing the dataset " email@example.com 'EffectiveUserName' XML for Analysis property is not valid."
The gateway is opened for the multidimensional cube and the account used for the gateway creation have admin rights to the cube as well. There is no issue on the gateway side and it is showing that the connection is successfull.
I have also tried to change to changed the Privacy level in the advanced setting from Organization to Private or Public but the issue remains same.
The gateway version is October-2020 (latest version)