BigQuery configuration. Workspace logs export. 0 rows

[Alango89]

Hello, this is my first time using bigquery.

I have configured the exports of my workspace. When I access the Activity table, it appears with 0 rows. How is that possible? 

I would like to be able to access Classroom grades through Google Sheets, Power Bi, or LookerStudio.

Thanks in advance for the help.