Hi , @JhonatanSCoelho
According to your data refresh error information provided, the reason for your data refresh failure has been clearly pointed out that the configuration credentials of the data source definition or gateway are not enough to provide to the Power BI service to refresh this dataset, you can go to the dataset setting interface in detail, find the "! , select Click Edit credential to re-enter and configure credentials for them, consider using a gateway for on-premises data sources:
For details, you can also check out this official document:
Configure scheduled refresh - Power BI | Microsoft Learn
Thank you for your time and sharing, and thank you for your support and understanding of PowerBI!
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly