Create variables on BI4.1 Webi throws - The object at position 1 does not exist in the report. (IES 10006) error

Dear Experts,

I have tried to create BO variables using BEx query objects on BI4.1 Webi, got the below error:

"The object at position 1 does not exist in the report. (IES 10006)."

Environment: BI4.1 SP1,

Semantic Layer: BEx query.

Please help what is the reason for this error. I can't create any variables in BO4.1 Webi.

Thanks

Karuppiah N