Failed to retrieve the cube for connection (xyz).(Error:INF)

Hello ,

Any body faced this error (Failed to retrieve the cube for connection (xyz).(Error:INF)????

Replication steps: Open the webi report in Launchpad-> refresh the report--> error appears.

Component info:

BOBJ Version: SAP BI 4.1 sp2 version 14.1.2.1121)

Report: Webi report

Source:BEX/CUBE

Connection: OLAP

BW : SAP BW 7.3

At first i have checked the user availability ( lock or unlock)  olap connection --- locked --- hence unlocked the user from BW

but still the issue is remains...

What my thought is: Cube or Bex or un available..?/inactive?secured bex query?

kindly suggest on this.

Note : Don't have access to BW,BEX..