[Innoworks 2022] Developer - pod name doesn't display


I am working on my Wise-PaaS Developer Level 1 certification. After I successfully created an image, ran it and pushed it, I used kubectl to apply the k8s config ‘kubectl apply -f k8s/ --namespace=assignment’. The Terminal displayed that my service/sso-frontend; deployment.apps/ and ingress.networking.k8s.io/ are created, but when I used ‘kubectl get all --namespace=assignment’; the pod name didn’t show. When I copied the const redirectUri address and paste it on the browser, the site displayed ’ 503 Service Temporarily Unavailable’. I wonder if is there anything I can do to fix this problem? Thank you for your help