I have read that this may be a problem to do with the GAPPS used in this build. Is it possible to flash another GAPPS package over the top of this rom? Otherwise is there a vanilla build of this rom to enable GAPPS to be flashed separately?
First go to camera app settings and clear storage. Then download the AutoNotification app. Configure to block ooscam notifications within this app. Take a picture, uninstall the downloaded app. You will no longer have this warning. And I also recommend restricting background access of ooscam app.