The first step is to delete all broken shortcuts. This can be done by dragging them to the trash.
You will now have to re-create these shortcuts.
1. Navigate to the folder in your shared drive you would like to favourite by going through Google Drive File Stream under Computer.
2. Secondary-click (Right-click) on the folder you would like to have a desktop favourite of.
3. Select Send to.
4. Select Desktop (create shortcut).
Watch this video here: