@wellplayed it looks like the Spatial Mapping permission has been denied. The device SHOULD be prompting you to accept the permission when the application is launched for the first time. If you denied access at any time, you'll need to Uninstall/Reinstall the application. There are a couple of ways you can correct this on device.
Uninstall/Reinstall: Settings > Apps & Notifications > Select your app or choose to see all apps and find it there > Uninstall. Then you can reinstall the app normally and it should prompt you for the permission again.
Alternatively, you can try Settings > Apps & Notifications > Select your app > Permissions > Click on the permissions you want to view and enable them from there.