RAS V7.0.0 includes breaking changes, Due to the update MUI 7 and Storybook 9.
You will need to follow the official MUI 7 migration recommendations.
Biggest impact is the renaming of the Grid V6 component to GridLegacy, and the Grid2 V6 component to Grid.
Also, if any of your components used withStyles or makeStyles you will need to migrate to the sx prop styles or another alternative.