SAP BO OLAP Analysis workspace issue in PROD

I am facing an issue in promoting and running the OLAP Analysis reports in production.

OLAP analysis reports are working fine in DEV, promoted in Testing landscape through LCM .

Works fine in Testing environment .Successfully promoted in Production through LCM but getting an error for OLAP workspace "An error occurred while restoring the workspace. Please contact your administrator".

I am able to create new OLAP Analysis report in production but not sure why I am getting this error when I am trying to run the promoted reports in production.

Please advise if someone encountered same error for OLAP Analysis reports.

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