Analysis Server Error - Failed to save modifications

Hello,

I have a query from SQL analysis service but got an error today saying: 

"Failed to save modifications to the server. Error returned: 'A deleted QueryGroup is referenced by a Partition or Expression. ' "

This used to refresh but today it's getting an error. 

I tried opening a new Power BI and added the query and it loaded just fine.

Maybe something's wrong with my current dashboard?