GA4 Key event metric not showing on Looker Studio

Hello, my looker studio dashboard is using GA4 as data source. I created a key event on GA4 weeks ago, it was recording data perfectly fine. However when I tried to import this into my dashboard, it always shows “Data Set Configuration Error”.

Key event are perfectly fine on GA4

They are available in my GA4 data source

Just not showing on my dashboard

Anyone have experience in it or solution to it? Thanks a bunch!