Olap Cube error refreshing

I have an excel workbook (15mb) consist of 100 + pivot tables .onnected to SSAS cube

Now I need to reconnect all pivot tables to Power BI dataset. But I can't do it.

It says. below error and stuck in below loop.

• Running OLAP query
• Refreshing the OLAP cube
• Waiting for query to be execute
•