Label-studio in GCP cloud run not showing completed labels after logout

Hi,
I am using label-studio in GCP cloud run `https://github.com/heartexlabs/label-studio#deploy-in-a-cloud-instance`. I have created user and done some annotations but later on, when I reopened again everything is gone. again its asking to create a project. Do we need to link this to cloud storage?, its not mentioned in the above link.